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从所给的四个选项中选择最佳答案
—________ I go home now?
—No, you ________ stay here and wait for the teacher.
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A.Can; may B.May; must
C.Must; have to D.Need; must
查看习题详情和答案>>-________ I take the book?
-Yes, but you ________ return it to me before next Friday.
A.Can; may
B.May; may
C.Need; must
D.May; must
________ we carry the new books from the library to the office now? No, you needn't, but you ________ do it tomorrow morning.
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