1. First he went to the booking office and bought a ticket . Then he (get on) the rain -> got on
2.When she arrived at the bus stop there was no one there .The bus(go) already -> has gone
3.Just after he came out of the stadium he reached for his wallet .It(disappear) -> was disappeared
4.The jury decided he was guilty of the crime .The judge(send) him to prison for it -> sent
5.He got off his bike after crossing the mountains .It(take) him two days -> took

                                 Giải:

Hai chiếc cặp như thế hết số tiền là:

 15 000 x 2 = 30 000 ( đồng)

Đáp só:30 000 đồng

Đừng xanh như lá, bạc như vôi

1.Will they go to the doctor tommorrow?

2. Will he watch a film tonight?

3. Will your brother listen to music tonight?

5. He would like to be a good football player.

6. I received a text message from Katy.

8. No other creature is more dangerous than the mosquito.

9. These two projects can't differ

The teacher asked /asks such a difficult question that nobody can/ could answer it. 

1. Are they preparing for Teachers'Day?

2.What are they going to do on Sports Day?

3. Is your brother going to sing a big songon Children's Day?

4.  He is practising playing the guitar in his room.

5. Will you take part in the singing contest?

6. They are going to play table tennis on that day.

7. Will Sports Day be on Monday?

8. Some of the boys are going to play football.

9. Are your students practising hard for the music festival?

10. We are going to take part in our Sports Day.

Hoa wants to learns how to sew to make a beautiful dress

24. It's a (surprise) ......surprising.............. news. All of us are (astonish) ...astonished....

25. She was (amaze) ..amazed............ to see that London drivers kept their cars to the left.

26. It was a very (tire) . . . . .tiring . . . . ... ... .............. meeting.

27. We were all very (worry) .....worried................... When he didn't come home.

Giải thich:

+ Ving --> Tính từ đuôi -ING dùng để miêu tả tính cách, tính chất, đặc điểm của người, sự vật, hiện tượng.

+ Ved  --> Tính từ đuôi -ED dùng để diễn tả cảm xúc, cảm nhận của con người, con vật về một sự vật, hiện tượng, sự việc nào đó.

71. The concert performance surpassed my expectations.

72. The company must be face accepted because  it is losing money.

73.  Diseases such as smallpox have not been stamped out yet.

74.  Jame has  the post of treasurer by two committee members.

75. Her complexion was enhanced by the color of that dress.
 
 

Tham khảo!

1.  I found my pen after I had bought a new one.

2. America (discover) …was discovered………… by Columbus.

3. Earth (hold)…is held…………..by the gravity of the sun and orbits around it.
4. The homeless (take)…are taken……….to a safe place where temporary accommodation will be provided for them.
5. In the future, natural disaster (predict)……will be predicted.………….accurately with the help of technology.
6. Bees (make) …make……… honey.
7. Bad driving (cause) …causes………many accidents.
8. Minh (not speak) …doesn't speak………….English well.
9. They (not drink)…don't drink………. coffee very often.
10. Yesterday, I (be) …was… busy, so I (not have) ……didn't have……time to phone you.

1. I can’t enjoy the fresh air because I live in the city .

2. I am not you so I can't do it.

3. I don’t have a car so I can’t travel there.

4. You get sick if you eat much candy.

5. Unless you go to the zoo, you won't see many animals.

6. If you are impatient, you won’t make mistakes.

7.  Unless  you water the tree, it will  die.

8. Unless you  study hard, you won't pass the exam

1. What about ( go ) to the supermarket?  -> going
2. We should ( do ) our homework before  ( go ) to school.-> do / going
3. Every one ( cheer ) and ( sing ) happily at the moment. -> is cheering / singing
4. Are you afraid of ( go ) in the dark?-> going
5. There ( be ) some orange juice in the glass.-> is

1. Vinh really enjoys hanging out with  his friends.

2. It is very interesting to play beach games.

3. What language do most ethnic people in Viet Nam speak?

4. Although the girl worked hard, her step mother wasn't happy.

1. I'm watching the World of Animals.

2. Why would he like to be an architect?

3. Because he would like to design buildings.

4. What kinds of stories does she like?

1. We're saving money to buy a new house.

2. Are you learning English to get a better job?

3. Lisa joined a gym to make  new friends.

4. Ethan and Ruben went to the movies to see a comedy.

5. I take yoga classes to relax.

6. Is Rita getting a credit card to buy more clothes?

4. It took her 2 days to tidy her room.

5. It took them half an hour to go to school.

6. It takes me 20 minutes to walk to school everyday.

7. It took Son Naeun 5 days to visit Danang.

8. It takes her 20 minutes to wash her dog every week.

9. He spent twelve hours  flying from Hanoi to London.

10. It often takes us 30 minutes to review our lesson before class. 

11. I spent two hours  getting to Vinh city by car.

13. It took me whole evening to finish my work.

4. It took her 2 days to tidy her room.

5. It took them half an hour to go to school.

6. It takes me 20 minutes to walk to school everyday.

7. It took Son Naeun 5 days to visit Danang.

8. It takes her 20 minutes to wash her dog every week.

9. He spent twelve hours  flying from Hanoi to London.

10. It often takes us 30 minutes to review our lesson before class. 

11. I spent two hours  getting to Vinh city by car.

13. It took me whole evening to finish my work.

P/s: Bạn tự vẽ hình nha!!!

Giải:

GT:  ΔABC ; O nằm bên ngoài tam giác

          Lấy điểm A', B', C' sao cho O là trung điểm các đoạn thẳng AA', BB', CC'

KL: a) A'B'= AB

      b) ΔA'B'C' = ΔABC

a) Xét  ΔOA'B' và ΔOAB, có:

BO= B'O (gt)                                                          

Góc BOA= Góc A'OB' ( đối đỉnh)

OA=OA' (gt)

=>  ΔOA'B'= ΔOAB ( c-g-c)

=>  AB'= AB (2 cạnh tg ứng)

b) CM: Tương tự câu a, ta có:

ΔACO= ΔA'C'O (c-g-c)     

=> AC=A'C' ( 2 cạnh tương ứng)

ΔOBC= ΔOB'C' ( c-g-c)

=> BC=B'C' ( 2 cạnh tương ứng)

=>  ΔA'B'C'= ΔABC (c.c.c)

       Nếu sai thông cảm ạ