问题
选择题
—Has Billy finished his homework today?
—I have no idea.He it this morning.
A.would do
B.was doing
C.has done
D.had done
答案
答案:B
依据答语中的时间状语可推知,比利作业未完成。他今天上午一直在做。过去进行
时除表示某段时间内一直在进行的动作外,还可表示某时刻正在进行的动作。如:
I was reading a book when he came in.