101. ………………………air and water are not good for our health. (pollute)
102. Air………………………makes us unhealthy. (pollute)
103. The………………………of the people in our community with the government is very necessary. (cooperate)
104. The paper milk………………………two tons of paper a day. Its…is one of the highest in our province. (produce)
105. My new car is more………………………than the one I had before. (economy)
106. Nothing could………………………him. (satisfaction)
107. She got great………………………of helping others. (satisfy)
108. There have been many………………………developments in the field of science. (wonder)
109. Many people say that ………………………is the happiest time. (child)
110. We didn’t agree with his………………………decide)
111. Most orphans are bred in……………………… (orphan)
112. Thousands of people were made….by the war. (home)
113. Mrs. Brown lived lonely in her……………………… (poor)
114. He was…because he could not pay his debts. (sadness)
115. Dickens’ novel were first………………………in 1838.
116. I really don’t think he has the………………………to do this job. (able)
117. They work ……………………… (good)
118. ………………………covers the sky at night. (dark)
119. Hard work always brings……………………… (succeed)
120. He was very………………………He was a……………………… (patriotism)
121. ………………………methods of farming have helped to increase rice production a great deal. (science)
122. Mr Hung went………………………last Sunday. (shop)
123. These abbreviations are………………………used in writing letters. (common)
124. I would recommend that you should be interested in reading………………………books and magazines. (education)
125. John is old enough to be………………………of his parents. (depend)
126. It takes years of………………………to acquire the skill of a ballet dancer. (practice)
127. These questions are………………………John can………………………answer them. (ease)
128. A spaceman must learn to become accustomed to………………………in a spaceship. (weight)
129. Make sure that your time is spent……………………… (use)
130. I’m………………………in your project because it is……………………… (interest)
131. The teacher often………………………the students to ask questions. (courage)
132. I can’t jump any……………………… (height)
133. The new law will………………………many women to return to work. (able)
134. Many people think that Faraday is the greatest………………………in his story. (invent)
135. It was one of his most important……………………… (achieve)
136. ………………………is often more useful than definition for giving the meanings of words. (illustrate)
137. The boy was given a prize for regular……………………… (attend)
138. His discoveries had a great………………………on workers. (influential)
139. Where were the competitions……………………… (organization)
140. The representatives joining the festival were from different……………………… (national)
141. They have a good………………………with their neighbors. (relative)
142. He left for a………………………of reason. (vary)
143. You can trust him. He is always…and everything he says is……………………… (truth)
144. Many old buildings in the city were moved to make way for……………………… (develop)
145. She has been very………………………since her husband died. (poverty)
146. We should learn all the new words by heart in order to………………………our vocabulary. (rich)
147. The little boy felt very…………………………his parents didn’t let him go with them. (disappoint)
148. She can’t go to school because of her……………………… (sick)
149. The………………………of that little girl makes the room more pleasant. (present)
150. ………………………is a problem throughout the world. (hungry)
151. Clever students………………………knowledge easily. (absorption)
152. With so many choices, it’s hard to………………………what to buy. (decision)
153. The village is very quiet and……………………… (peace)
154. All my efforts ended in……………………… (fail)
155. I was………………………about the dates. (confusion)
156. You should have a………………………about scientific subjects if you want to be a scientist. (curious)
157. Children need to have a good……………………… (education)
158. ………………………puzzles are funny. (mathematics)
159. You don’t need to have a ………………………memory to be a scientist. (miracle)
160. Our school team won three………………………games. (succession)
161. A scientist doesn’t need a miraculous……………………… (memorize)
162. It will take a long time to find out a thorough………………………to the problem of pollution. (solve)
163. traveling by train is very……………………… (attract)
164. ………………………have researched………………………subjects (science)
165. Countless ………………………have been made in the textile industry.
166. His father is an……(architecture)
167. The………………………of world population is being studied. (grow)
168. Japan is an………………………country. (industry)
169. She’s so busy with………………………activities that she has no time for entertainment. (society)
170. Every………………………in science helps you gain new knowledge. (succeed)
171. Coke is a………………………of cola flavor, water carbon dioxide and sugar. (mix)
172. Some experts say cycling is one of the………………………form of exercise. (safety)
173. Is there any………………………to treat her so badly? (necessary)
174. After the hot summer, there was a………………………of water. (short)
175. The………………………will make him a rich man. (inherit)
176. The………………………to the questions are at the back of the book. (solve)
177. I’ll give you three sweets in………………………for an apple. (exchange)
178. In some countries, black people do not have………………………with white people. (equal)
179. Can you………………………life without electricity and other modern conveniences? (imagination)
180.Mrs Tam has just bought a………………………object. It doesn’t cost even a penny. (value)
181. The United Nations………………………is an international one. (organize)
182. Banks make loans to……………………… (borrow)
183. Banks provide………………………which make it easier for us to pay bills and carry on business. (serve)
184. The………………………unit in France was the Franc. (money)
185. I’m worried about the………………………of the children. (safe)
186. What do you call the………………………relations among countries. (nation)
187. This restaurant is…………………………its western meals. (fame)
188. They all passed their exams without the slightest……………………… (difficult)
189. Applied scientists have………………………our homes. (electrification)
190. The………………………of a famous doctor was announced last night. (die)
191. Don’t leave the lights on. It wastes……………………… (electric)
192. These countries are………………………in imports of raw cotton. (prefer)
193. The………………………of the moon for the earth causes the tides. (attract)
194. We………………………go out for dinner but we cook own meals most of the time. (occasion)
195. Traveling a lot will………………………our minds. (broad)
196. In some countries………………………has made young people buy things they don’t need. (advertise)
197. I can say with………………………that you have made much progress in learning English. (certain)
198. The company is very efficient and gives a………………………service. (speed)
199. You are very……………………… (intelligence)
200. Special drugs should be………………………and dispensed carefully. (manufacture)
201. People must have………………………for the air pollution. (responsible)
202. Do you like………………………? (chemist)
203. We have some………………………for typists. (vacant)
204. He often went to work late, ………………………he was sacked. (consequence)
205. He was………………………because of his illness. (absence)
206. They looked at him in……………………… (astonish)
207. They live with a great………………………belief. (religion)
208. Please don’t ask such………………………questions. (person)
209. He is………………………with his new job. (satisfy)
210. This sun block lotion gives good………………………against harmful ultraviolet rays. (project)
211. She was too………………………to tell her teacher about the stupid mistakes. (shame)
212. This photo has just been……………………… (large)
213. He always fells………………………in class because of his laziness. (sleep)
214. She failed the driving test because she didn’t follow the guidance of the driving……………………… (instruct)
215. He………………………agreed to my suggestion. (ready)
216. The island is………………………only by boat. (access)
217. They spent all their money and made no………………………for their future. (provide)
218. When foreigners ask him, he answers in English……………………… (automatic)
219. What he has explained about that problem is……………………… (reason)
220. You must always tell the……………………… (truth)
221. The girl looked………………………for a moment and then answered. (think)
222. The country’s………………………resources include forests, coal and oil. (nature)

1. He is a………………………boy. He always asking questions. (curiosity)
2. All the pupils have done the exercises ……………………… (easy)
3. Keep………………………! The teacher is explaining the lesson. (silence)
4. Be………………………in your work! (care)
5. Time passes………………………when you are alone. (slow)
6. He………………………carefully. He rarely has accident. (driver)
7. Ho Chi Minh city is an important………………………centre. (commerce)
8. We have a………………………newspaper in this town. (week)
9. This exercise seems……………………… (difficulty)
10. Mrs Green can help Alice to make a good……………………… (choose)
11. He has………………………bought a new car. (recent)
12. How………………………the dress is! (expensive)
13. How………………………those shop windows are! (beauty)
14. She has finished her best……………………… (perform)
15. The cartoon last night was very……………………… (interest)
16. She………………………goes to the pictures with her younger sister. (frequency)
17. Last night the singer sang very……………………… (good)
18. The story about an……………………… trip. (excite)
19. In May the days often……………………… (long)
20. He got rid of the ………………………by opening a window. (smell)
21. Nobody showed them to their ……………………… (sit)
22. Helen speaks English very……………………… (fluent).
23. This is the most………………………machine in our field. (value)
24. We can keep the land in………………………condition by killing weeds. (well)
25. Jack plays football ……………………… (splendid)
26. The ball was followed with great……………………… (excite)
27. That was an………………………match, wasn’t it? I was………………………to see it. (excite)
28. ………………………is a good career. I want to become a ……………………… (teach)
29. Rubber trees are very……………………… (use)
30. Sports are very good for our……………………… (healthy)
31. Who will take……………………of the baby when you go away? (careful)
32. Don’t worry about her……………………… (complain)
33. What is the real………………………of the house? (wide)
34. I want to make new dresses but I don’t have a ………………………machine. (sew)
35. She danced so………………………that the audience clapped their hands many times. (beauty)
36. I’ll have Tom repair our electric……………………… (cook)
37. Water has no color. It is a………………………liquid. (color)
38. Please don’t make……………………… (noisy)
39. Mr Green works in this factory as a shop……………………… (keep)
40. Ky Hoa lake is one of the areas of……………………… (entertain)
41. Butter is one of the………………………of milk. (produce)
42. He is a………………………person. He often makes me laugh. (fun)
43. I didn’t know how you………………………your birthday party. (celebration)
44. On Christmas day, I often send my close friends………………………cards. (greet)
45. He is famous………………………in this country. (act)
46. He often writes stories. He is a……………………… (write)
47. These flowers look……………………… (nature)
48. It’s not………………………to answer this question. (difficulty)
49. His plays were ………………………on the stage in London. (performance)
50. The film is ……………………… so I’m ……………………… (bore)
51. The Sword lake is one of………………………places in Hanoi. (history)
52. He devoted all his………………………to writing. (live)
53. How………………………the street is! (danger)
54. She lives………………………although she is very poor. (happy).
55. I’ll help you to………………………some beautiful paintings. (choice)
56. The love for book is………………………in developing the pupils’ knowledge. (help)
57.This public library is………………………to all people. (open)
58. Books help people to get more……………………… (know)
59. ………………………countries need help from …………………..ones. (develop).
60. This stamp………………………is valuable. (collect)
61. The person who takes care of books in the library is a ……………………… (library)
62. He is very……………………… (friend)
63. She smiles so………………………, doesn’t she? (attract)
64. My………………………for your skill is great. (admire)
65. we all held our breath because of that………………………film. (thrill)
66. I only had a day to visit all the tourist ………… …………… (attract)
67. They ride their bicycles to the countryside for ………… …………… (please)
68. Red………… ……………communist countries. (symbol)
69. May Day is celebrated regularly in………… ……………countries. (society)
70. He lost the game because of his………… …………… (care)
71. The teacher stressed the need for regular…………… …………. (attend)
72. The cost of…………… …………must be paid by the buyer. (carry)
73. Our…………… …………from London to Sydney took 24 hours. (fly)
74. The police are interested in the sudden………… ……………of the valuable painting. (appear)
75. The master gave Oliver Twist a terrible………… …………… (punish)
76. He gave no…………… …………for his absence. (explain)
77. They were happy because their work was finished………… …………… (success)
78. To prepare his………… ……………works, Karl Marx often spent whole days in the library of the British Museum. (science)
79. He is respected for his …………… ………… (simple).
80. They had made a lot of………… ……………before the game started. (prepare)
81. Manchester players have been trying to score another goal, but their efforts are ………… …………… (succeed)
82. We must make……… ………………for his youth. (allow)
83. An ……… ……….. man has stolen all our money. (know)
84. Two of these tablets should be taken………… …………… (day).
85. Dogs are very ……………………… pets. (faith)
86. The Thames flows……………………… through green meadows. (gentle)
87. Relax in our……………………… chairs and enjoy our excellent tea and hot chocolate. (comfort)
88. I’m so……………………… you’re going to visit my country. (please)
89. What a naughty boy! He always does things ……………………… (noise)
90. There were ten ……………………… in the race. (compete)
91. His……………………… makes his parents feel sad. (lazy)
92. You should……………………… to your teacher. (apology)
93. Jack is……………………… of his essay on the Thames. (pride)
94. Paris is……………………… for the Eiffel tower. (fame)
95. He worked hard to……………………… good crops from poor soil. (product)
96. How……………………… of you to break that cup! (care)
97. His long……………………… made us bored and sleepy. (speak)
98. He never takes his father’s……………………… (advise)
99. They sat……………………… by the stream. (quiet)
100. To my ……………………… the monkey peeled a banana and offered it to me. (amaze)

a) 1,4 + [$\frac{3}{5}$-($2^3$x10-$2^3$x5)]
b) 1,2 : {$\frac{9}{4}$:[3-(12,5+2,5x7)]}+$\frac{2}{5}$

Exercise 2
1.​They prayed that their daughter_____ be lucky again.
​a. may​b. will​c. could​d. might
2.​He _____ all that money, so she could save some.
​a. didn't need to spend​​b. needn't have spent
​c. shouldn't spend​​d. oughtn't to spend
3.​He spent all that money last week. He_____ so much.
​a. didn't need to spend​​b. shouldn't spend
​c. needn't have spent​​d. didn't have to spend
4.​He had to work hard so that he _____ his family.
​a. may support​b. supported​c. can support​d. might support
5.​They have plenty of time, so they need not_____
​a. be hurry​b. to hurry​c. hurry​d. to be hurry
6.​You're having a sore throat. You'd better_____ to the doctor.
​a. to go​b. went​c. go​d. going
7.​I would rather_____ poor but happy than become rich without happiness.
​a. being​b. he​c. to be​d. was
8.​Sit down please _____ a cup of tea?
​a. Do you like​​b. Do you like to drink
​c. Would you like​​d. Will you like
9.​Must you come when your neighbout calls?
​No, I_____
​a. must not​b. mustn't​c. don't have to​d. must not come
10.​May I have 2 tickets, please? two tickets, please?
​a. You must given me​​b. You have got to give me
​c. Could I have​​d. You may give me
11.​He will have to stay in hospital. That's what he_____
​a. has done​b. must do​c. must be doing​d. must have done
12.​Do you have to buy this hat? No, I _____. It isn't necessary.
​a. mustn't​b. won't​c. needn't​d. don't need
13.​A man never have too many ties. It's ______
​a. unable​b. impossible​c. improbable​d. incapable
14.​It could not tell the difference between Indian music and jazz.​
​a. might not​b. may not​c. mustn't​d. wasn't able to
15.​This plane could get over the mountain if it rose to 10,000 feet. This means it______ over the mountains.
​a. would succeed in getting b. got​c. was bale to get​d. had got
16.​The plane was then able to rise. This means it______
​a. could rise​b. might rise​c. might succeed in rising​d. rose
17.​Byrd knew that he would be able to reach the South Pole. It would be______.
​a. impossible​b. necessary​c. able​d. possible
18.​He ought not______ him but she did.
​a. to tell​b. to telling​c. tell​d. to have told
19.​I’d rather you______ that.
​a. do​b. don't do​c. won't do​d. didn't do
20.​______ run so fast?
​a. Does he need​b. Need he to​c. Need he​d. Needs he
Exercise 3
1.​He didn't need______ out of his room in Moscow.
​a. go​b. to going​c. going​d. to go
2.​I could not ______ it even though I had wanted to do so.
​a. had bought ​b. buy​c. buying​d. have bought
3.​I left my pen in this box, but it isn’t there now. Someone______ it.
​a. must have taken​b. must take​c. had to take​d. had taken
4.​Mary received 100 dollars from her sister. She______ the ring she wanted. It only costs 10 dollars.
​a. buys​b. had bought​c. bought​d. might have bought
5.​It lost my Honda last week; I hadn't locked it. You______ it.
​a. should lock​b. should have locked c. ought to lock​d. could lock
6.​In 1900 the world had no deaths from rabies. Scientists______ wonderful vaccine.
​a. has discovered​b. discovered​c. must have discovered​d. should have discovered
7.​Mary received 100 dollars from her sister. She______ the computer she wanted. It costs 200 dollars.
​a. wouldn't buy​b. hadn't bought​c. couldn't have bought​d. didn't buy
8.​Once Helen failed in her exam. She played too much. She______ too much.
​a. shouldn't have played​b. should play​
​c. shouldn't play​​d. wouldn't have played
9.​If I had liked that watch, may be I ______ bought it.
​a. will have​b. must have​c. would have​d. shall have
10.​Did my sister tell you that I had been to Dalat?
​a. might have​b. could have​c. would have​d. must have
11.​The women of this tribe______ precious ornaments for slat because they didn’t have any salt.
​a. have traded​b. traded​c. would have traded​d. could trade
12.​I took my only son to the park but he didn't like it. You ______ him to the zoo.
​a. should take​b. had to take​c. took​d. should have taken
13.​We are now wet. You______ the raincoats with you.
​a. should bring​b. should have brought ​c. must bring​d. have to bring
14.​The yard is wet. It______ last night.
​a. must rain​b. must have rain​c. must have rained​d. had to rain
15.​Many birds will______ more than 3,000 miles to reach their winter homes.
​a. flying​b. fly​c. be fly​d. flew
16.​The pen won't write; it______ out of ink.
​a. must run​b. must be running​c. must have run​d. must have ran
17.​The line is busy; someone______ the telephone now.
​a. must be using​b. must have used​c. must used​d. must have been using
18.​Bob is absent; he______ sick gain now.
​a. must have been​b. must be​c. must be being​d. must being
19.​He______ his j ob because he seems very happy.
​a. would like​b. can like​c. will like​d. must like
20.​She told me that she'd rather______ on the committee.
​a. not to serve​b. not serving​c. not serve​d. serving not

Tìm ƯCLN của các số sau :
a, 72 và 150
b, 42;84 và 70

Your house isn't (beautiful) .............. mine
Your house is (beautiful) ....mine

Từ câu chuyện"carm hóa" nhau của Cáo và Hoàng tử bé trong văn bản "Nếu cậu muốn có 1 người bạn".Em hãy viết 1 đoạn văn khoảng 10 câu trình bày về cảm nghĩ của em giữa HTB và Cáo

____ nice the weather is!
A.What B.How C.Which D.Who

1,Nghệ thuật nhân hóa trong bài thơ "Mây và Sóng" đc thể hiện ntn?
2,Viết 1 đoạn văn khoảng 10 câu trình bày về cảm nhận của em về tình mẫu tử thiêng liêng qua bài thơ "Mây và Sóng" của Ta-go

We live ____ 123 Le Loi street (on/in/at/the)

Tìm hiểu về vị trí địa lí,dân số, lịch sử hình thành và phát triển,bộ máy chính trị hiện nay của Chương Mỹ

Task 3: choose the underlined word or phrase (marked A,B,C or D) that needs correcting
9. the PAINTING competition WILL START AT his school ON the 17th october

18. Viết các tổng sau thành bình phương của 1 số tự nhiên :
a) 1+3+5+...13
b) 3 mũ 2+ 4 mũ 2+ mười hai mũ 2
20. Tìm số tự nhiên n biết
a) 4 mũ n = 256
b) 9 mũ 5n-8= 81
c) 3 mũ n+2 : 27= 3
d) 8 mũ n+2 × 2 mũ 3 =

1.Vẽ tam giác đều có cạnh dài 4,5cm.Tính các góc của hình tam giác
2.cho hình vuông ABCD có cạnh CD=3cm.Tính AB,BC,CA

1.Khi viết danh từ riêng ta phải viết như thế nào? Lấy ví dụ minh họa
2.Khi viết tên người,tên địa lý nước ngoài phiên âm trực tiếp bằng Tiếng Việt thì phải viết như thế nào? Lấy ví dụ minh họa
3.Tên cơ quan,tổ chức ta phảu viết như thế nào?Lấy ví dụ minh họa.

Cho tập hợp M= {1;2:x;y} và N= {1;3;a}
a) viết tập hợp A các phần tử thuộc M và ko thuộc N
b) viết tập hợp B cho các phần tử vừa thuộc M vừa thuộc N
c) viết tập hợp C các phần tử hoặc thuộc M hoặc thuộc N

C) cho tập hợp A các số tự nhiên x mà x-3=24

4/5+5/7:x=6/5