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试题题干

The students( )busily when Miss Brown went to get a book she( )in the office.

A

had written, left

B

were writing, has left

C

had written, had left

D

were writing, had left

参考答案

正确答案:

试题解析

本题考查过去进行时和过去完成时。
句意:Brown小姐去拿她留在办公室的一本书时,学生们正在忙着写作业。
“正在忙着写作业”这个动作是when引导的在过去某段时间内持续进行的动作,所以要用过去进行时,“书留在办公室”发生在“went to get”这一过去的动作之前,所以是过去的过去,要用过去完成时。故D选项符合题意。