问题
选择题
The last train is left, so you _____ stay here until tomorrow. [ ]
A. must
B. have to
C. needn't
D. can not
答案
答案：B
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The last train is left, so you _____ stay here until tomorrow. [ ]
A. must
B. have to
C. needn't
D. can not
答案：B
