问题
选择题
—_____ I play computer, Mum?
—No, you _____ do your homework first. [ ]
A. Can; may not
B. May; needn't
C. May; must
D. Must; couldn't
答案
C
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—_____ I play computer, Mum?
—No, you _____ do your homework first. [ ]
A. Can; may not
B. May; needn't
C. May; must
D. Must; couldn't
C