问题补充:
I had wanted to help you last night but I couldn spare any time, for I___a composition which I have to hand in this morning.
A. wrote
B. was writing
C. had written
D. have written
答案:
A. wrote
(答案→)B. was writing
C. had written
D. have written
解析:考查时态:句意:昨天晚上我本来想帮助你的,但是我腾不出时间,因为我正在写一篇今天早上要交的作文。因为是昨天晚上正在做…,用过去进行时,选B。