题目内容
The boys don’t know ___________.
A.how do they swim | B.how swim |
C.they how swim | D.how to swim |
D
本题的含义是男孩们不知道如何去游泳,疑问词how+动词不定式to do代替从句,故本题选D。
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题目内容
A.how do they swim | B.how swim |
C.they how swim | D.how to swim |