— Why haven’t you asked her to come here?— She an important experiment when I found her a

问题补充：

— 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：

A. had done; didn’t finish

(答案→)B. was doing; hasn’t finished

C. did; wouldn’t finish

D. did; hadn’t finished

解析：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。