Yes, I suppose she was but she'd changed so much. She used to be chubby, but now she was all skin and bone

She came in and turned up the TV. Her favourite programme had just begun.

Due to the efforts of conservationists and environmentalists, few people are unaware the problems of endangered species.

 A. ignorant of B. well-informed of C. indifferent to D. adjustment to 

 Contrary to popular belief this kind of snake is quite innocuous.

 In the past, energy source was thought to be boundless.

I wonder if I would answer the following personal questions.

A. individual

B. private 2

C. public

D. owned 

I wonder if I would answer the following personal questions.

A. individual B. private C. public D. owned

The thief hid his breclouenossessions in the well behind his house.

A. inexpensive B. robbed  C. valuable  D. worthless 

 He was respected by all of the colleagues who used to work with him for years

D. looked up to

A. looked down on

C. complied with B. ignored

bài tập trái nghia

Adverse weather conditions made it difficult to play the game.

D. severe A. favorable  C. comfortable   B. bad 

During the five-decade history the Asian Games have been advancing in all aspects. OPPOSITE

 A. holding back

 B. holding at

 C. holding by

 D. holding to

Fruit and vegetables grew in abundance on the island. The islanders even exported the surplus. OPPOSITE

 A. large quantity

 B. excess

 C. small quantity

 D. sufficiency

My friend Albert as decided to buy a motorbike. His car was stolen last week. 

 A. My friend Albert, whose car was stolen last week, has decided to buy a motorbike.

 B. My friend Albert whose car was stolen last week has decided to buy a motorbike.

 C. My friend Albert has decided to buy a motorbike which car stolen last week.

 D. My friend Albert has decided to buy a motorbike has his car stolen last week.

After finishing the duty at the company at 6 p.m.

- Anna: “Shall we eat out tonight?”

- Jane: “___________”

 A. It is very kind of you to invite me.               B. You are very welcome.

C. That‟s a great idea.            D. That‟s understandable

Jack is going to London to study next week.

- Betty: “____________”

- Jack: “Thanks. I will write to you when I come to London.” 

 A. Better luck next time!                                   B. Have a go!

_____ long _____ his brother was at the party last night. They were both busy.

 A. Neither/ nor            B. Both/ and                   C. Either/ or                   D. Neither/ or

Not only _____ the exam but she also got a scholarship.

 A. has she passed        B. she has passed           C. she passed                 D. did she passed

Benald wanted to know _____.

 A. where I have been those days.                      B. where I had been those day.

 C. where had I been those days.                        D. where I had been those days.

The clown was wearing a _____ wig and red nose.

            A. red funny plastic    B. red plastic funny    C. funny red nose        D. funny plastic red

¼ of my income _____ to pay for my university debts.

   A. has been used         B. were used                  C. has used                     D. are used

¼ of my income _____ to pay for my university debts.

   A. has been used         B. were used                  C. has used                     D. are used

Due to severe weather condition, we had to wait long hours _____ the airport.

   A. in                            B. at                               C. from                           D. on

I have asked my boss _____ me one day- off to see the doctor.

   A. to give                    B. that he give                C. giving                        D. if could he give

Despite many recent _____ advances, there are parts where schools are not equipped with computers

Many African and Asian nations have set aside land called _____ to protects the habitats of elephants and other wild animals.

   A. reserves                  B. wildlife                      C. species                       D. forest

______ here for hours and I feel tired.

   A.I had been standing                                        B. I have been standing 

   C. I have stood                                                   D. I’m standing

But for your support, we couldn‟t _______ this plan.

   A. have been completed                                    B. be completed

    C. have completed                                            D. complete

 I have gone to the doctor‟s to have a checkup.

- You _______ You just had your check-up last week!

   A. don’t need to go.    B. needn;t go.                 C. didn’t need to go. D. needn’t have gone.

The puppy stood up slowly (A), wagged its (B) tail, blinking (C) its eyes, and (D) barked.

Excavations in some villages on the east bank (A) of the Euphrates River have revealed (B) an ancient community that had been laying (C) under later (D) reconstructions of the city of Babylon.

It was suggested that Pedro studies (A) the material more (B) thoroughly before attempting (C) to pass (D) the exam. 

Never have people been so well informed as they are now, thanks to TV news programs. 

   A. Thanks to TV news programs, people are now too well informed.

   B. People have been so informative thanks to TV news programs.

   C. TV news programs are very informative than before and people are better informed.

. I should have finished my work last night but I was exhausted. 

   A. I did finished my work last night thought I was exhausted.

   B. I was exhausted so I didn‟t finish my work yesterday as planned.

   C. Last night I was exhausted but I tried to finish my work.

   D. My work was finished last night but I was exhausted.

No one has seen Linda since the day of the party. 

   A. The party is going on without Linda.

   B. No one has seen Linda for ages.

   C. Linda has not been seen since the day of the party.

   D. Linda is nowhere to be seen at the party.

School uniform is compulsory in most of Vietnamese schools. CLOSEST

   A.paid                         B. required                     C.divided.                      D. depended

School uniform is compulsory in most of Vietnamese schools. CLOSEST

   A.paid                         B. required                     C.divided.                      D. depended

. I could see the finish line and thought I was home and dry. CLOSEST

   A. Unsuccessful          B. hopeful                      C. successful                  D. hopeless

a/$a^6-a^4+2a^3+2a^2$

b/$x^3-3x^2+3x-1-y^2$

Đốt cháy hoàn toàn 4,48g kim loại A có hoá trị III trong bình khí Clo vừa đủ,thu được một chất rắn.Hoà tận chất rắn vào nước ta đuợc đung dịch B. Cho dd phản ứng với dd KOH dư thu được kết tủa C và dung dịch D.Lọc kết tủa nung ở nhiệt độ đến khối lượng không đối thủ được chất rắn E có khối lượng 6,4g.

Viết pt phản ứng xảy ra

Xác định kim loại A

Đốt cháy hoàn toàn 4,48g kim loại A có hoá trị III trong bình khí Clo vừa đủ,thu được một chất rắn.Hoà tận chất rắn vào nước ta đuợc đung dịch B. Cho dd phản ứng với dd KOH dư thu được kết tủa C và dung dịch D.Lọc kết tủa nung ở nhiệt độ đến khối lượng không đối thủ được chất rắn E có khối lượng 6,4g.

Viết pt phản ứng xảy ra

Xác định kim loại A

Xác định đúng dịch D gồm những chất nào?