Câu hỏi: The police questioned all guests. They……………….that one of them was a spy.

A. wondered 

B. surprised 

C. challenged

D. suspected

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

A. he

B. him

C. his

D. himself

Câu 2: The rivers can be…………..by chemicals. 

A. poisonous 

B. contaminated

C. flooded

D. polluting

Câu 3: He can make change in his timetable when he wants to. It means that he's got a……….timetable. 

A. modern 

B. fashionable

C. flexible

D. convenient

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

A. out of

B. for

C. into 

D. behind

Câu 5: "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 6: There has been a lot of………..against nuclear weapons.

A. criticism

B. contest

C. protest 

D. conflict