I didn't see her coming out.She ____ her homework in the room.
问题描述:
I didn't see her coming out.She ____ her homework in the room.
A.could do B.could be doing C.might do D.might be doing
为什么?
can,could也可以表示推测的吧,为什么直接就把AB排除了?
答
D
表示猜测,排除了A B 用于进行时态,所以用D
我没看到她出来,我想她这会儿可能正在做作业吧.