题目内容
--________ he be watching TV now?
--Yes, he _________ be watching TV now.
--No, he _________ be watching TV now.
[ ]
A.Must; can; mustn't
B.Can; must; can't
C.Can; can; mustn't
D.May; must; needn't
答案:B
提示:
提示:
|
表示推测的疑问句用can;肯定句用must,否定句用can't. |
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