— 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 finishB．was doing; hasn’t finished
C．did; wouldn’t finishD．did; hadn’t finished
B

試題分析：考查固定句型。固定句型: be doing sth when…正在做某事在做這時…；when后面發(fā)生了意料之外的事情。句意：—為什么你不要求她來這里？—她正在做一個重要的實驗在這時我發(fā)現(xiàn)她。她還沒有完成。故B正確。
點評：固定句型: be doing sth when…正在做某事在做這時…；when后面發(fā)生了意料之外的事情
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