They are ( )these books in the box.A.puts B.put C.to put D.p

问题描述:

They are ( )these books in the box.A.puts B.put C.to put D.putting
选择,最好帮我讲解一下.
1个回答 分类:英语 2014-12-02

问题解答:

我来补答
D
他们正把这些书放到盒子里.现在完成时.are提示了,故用are putting
 
 
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