52单词网 > 高中英语 > 高中英语题库 > We on it for several hours but we haven't yet reached any conclusion．A.are worki

We on it for several hours but we haven't yet reached any conclusion．A.are worki

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We on it for several hours but we haven't yet reached any conclusion．A.are worki

We ________ on it for several hours but we haven't yet reached any conclusion．

A.are working

B.work

C.have been worked

D.have been working

试题答案

D

标签：buthoursweyethaven

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