Câu hỏi: "Why didn't you buy that car?" - "Because it was so expensive that I couldn't……….it. 

A. afford

B. give 

C. have

D. offer

Câu 1: I talked to _______ grandmother for three hours last night.

A. he

B. him

C. his

D. himself

Câu 2: ……..are people who leave their country to live in another one

A. Emigrants 

B. Deserters 

C. Travellers 

D. Explorers 

Câu 3: Because of the increasing enrolment, the school has to employ teachers who are not…….for their jobs. 

A. qualifying

B. qualified 

C. worth 

D. skilled

Câu 4: The elevator isn't running now. It must be….order. 

A. out of

B. for

C. into 

D. behind

Câu 5: Einstein's …….is really too difficult for the average people to understand. 

A. explanation

B. knowledge

C. experiment

D. theory

Câu 6: The rivers can be…………..by chemicals. 

A. poisonous 

B. contaminated

C. flooded

D. polluting