4.The grammar books --- again and again by bus.A.is read B.a

问题描述:

4.The grammar books ___ again and again by bus.A.is read B.are read C.have read D.has read
1个回答 分类:英语 2014-09-21

问题解答:

我来补答
B
主语是书,所以应该用被动语态,先排除C和D,books为复数,再排除A
 
 
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