----Whendidyoucomeback? ----Halfanhourago.You

問題詳情：

 ---- When did you come back?

 ----Half an hour ago. You _______ to music.

A. listened       B. had listened       C. were listening     D. have been listening

【回答】

C

知識點：過去進行時及其被動式

題型：選擇題