“I TOOK THE TOEFL. IT WAS REALLY HARD.” – “ ………….A LOT BEFORE YOU...

17. - DE TRAC NGHIEM SO 1 12
DE TRAC NGHIEM SO 1 12

17. “I took the TOEFL. It was really hard.” – “ ………….a lot before you took it?”

A. Had you studied

B. Did you studied

C. Have you studied

D. Do you study