题目内容
— Why haven’t you asked her to come here?
— She _______ an important experiment when I found her and she _______ it.
— 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 |
B
试题分析：考查固定句型。固定句型: be doing sth when…正在做某事在做这时…；when后面发生了意料之外的事情。句意：—为什么你不要求她来这里？—她正在做一个重要的实验在这时我发现她。她还没有完成。故B正确。
点评：固定句型: be doing sth when…正在做某事在做这时…；when后面发生了意料之外的事情
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