“I took an exam this morning. It was really hard.” “ ————- a lot before you took it?”

“I took an exam this morning. It was really hard.” “ ————- a lot before you took it?”

A. Have you studied

B. Did you study

C. Have you study

D. Do you study
Xem đáp án
B là đáp án đúng
Lời giải:
Thì quá khứ đơn.