Câu hỏi: The teacher asked him why hadn’t he done his homework, but he said nothing.

A. why

B. hadn’t he done

C. but

D. said nothing

Câu 1: Dogs that are trained to lead the blind must be loyalty, intelligent and calm.

A. Dogs that

B. trained

C. the

D. loyalty

Câu 2: The telephone rang several times and then stop before I could answer it.

A. times

B. then

C. stop

D. could

Câu 3: You shouldn’t criticize him in front of his friends. It was insensitive of you.

A. shouldn’t criticize

B. him in front of

C. it

D. insensitive

Câu 4: The shopkeeper warned the boys don't learn their bicycles against his windows.

A. the

B. don’t

C. their

D. against

Câu 5: Upon reaching the destination, a number of personnel is expected to change their reservations and proceed to Hawaii.

A. reaching

B. is

C. to change

D. proceed to

Câu 6: Once you have finished an article and identified its main ideas, it may not be necessary to reread it again.

A. indentified

B. be necessary

C. Once

D. again