问题
选择题
—Why haven’t you asked her to come here?
—She _______ an important experiment when I found her and she _____ it.
A.had done ; didn’t finish
B.was doing ; hasn’t finished
C.did ; wouldn’t finish
D.did; hadn’t finished
答案
答案:B
考查时态。“你为什么没让她来这里?”“当我找到她时,她正在做一个重要的实验,她还没做完。”根据句意可知,第一空应该用过去进行时。发生在过去的事情,对现在造成的影响,用现在完成时。故选B。