---Has Tom finished his job yet? ---I have no idea of it; he _____ it this morning.A.has been doing

题目简介

---Has Tom finished his job yet? ---I have no idea of it; he _____ it this morning.A.has been doing

题目详情

---Has Tom finished his job yet?
  ---I have no idea of it; he _____ it this morning.
A.has been doing B.had been doing  C.did   D.was doing
题型:单选题难度:偏易来源:不详

答案

D
考查时态。表示过去某一时刻正在进行的动作用过去进行时态。句意:汤姆完成他的工作了吗?我不清楚,他整个上午一直在做。所以选D。

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