问题标题：
Water________ice．A.canbebecomeB.canbecomeC.canbebecomedD.canbecame
问题描述：
Water________ice．
A.canbebecome
B.canbecome
C.canbebecomed
D.canbecame
唐雪飞回答：
答案B
分析：句意是“水能变成冰”,动词是become,而become是个连系动词,连系动词后面跟的是表语,不是宾语,所以become没有被动语态,要选B．can后面用动词原形.A和C项都是用了不存在的被动语态形式,也都错了(而且不存在becomed这个形式,become的过去分词是become)．
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