您的位置: 首页  >  作业答案  >  英语  >  I can't get through to the general manager's office anyhow.The line is busy.Someone____the telephone.A.must use B.uses C.must have been using D.must be using这里的Someone应该是主动的,那为什么答案是D呢?

I can't get through to the general manager's office anyhow.The line is busy.Someone____the telephone.A.must use B.uses C.must have been using D.must be using这里的Someone应该是主动的,那为什么答案是D呢?

分类: 作业答案 • 2022-04-13 15:59:53
问题描述：

I can't get through to the general manager's office anyhow.
The line is busy.Someone____the telephone.
A.must use B.uses C.must have been using D.must be using
这里的Someone应该是主动的,那为什么答案是D呢?

答

D.是现在进行时

答

这里的must be using并不是被动语态,而是推测某人在某个时间一定正在做某事,因为must是情态动词,后面跟动词原形,所以is using就要变成be using

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