题目内容
can, could, may和might都可用来表示允许、许可或请求允许、许可，请用can, could, may或might填空。
1．－________(Could, May)I watch TV, Mum?
－Yes, you ________(can, may), but you must finish your homework first．
2．－________(Might, Can)I borrow your bike?
－Yes, you ________(can, may)．
3．－________(May, Might)I ask you a question?
－Yes, please．
答案：Could,can;Can,can;May
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