Câu hỏi:  How long have you ------------- he was a liar.

A. been knowing

B. knew

C. know

D. known

Câu 1: -------------- study hard when you were at school?

A. Must you

B. Had you

C. Did you have to

D. Were you

Câu 2: When she was 21 she -------------- across the United States.

A.  drove

B. drive

C. driven

D. was driving

Câu 3: While the waiter was picking up the broken plates, he ---------- his finger.

A. cut

B. was cutting

C. had cut

D. cuts

Câu 4: They ------------ to the theatre twice so far this month.

A. are going

B. go

C. went

D. have been

Câu 5: She is tired because she ------------- all day.

A. is studied

B.  has been studying 

C. had been studying

D. studied

Câu 6: “How many pages…………… so far?"

A. have you studied

B. did you study

C. do you study

D. had you studied