问题
选择题
— There _____ be anybody in the classroom, for the lights are off.
— I'll go and check. [ ]
A. mustn't
B. won't
C. needn't
D. can't
答案
答案：D
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— There _____ be anybody in the classroom, for the lights are off.
— I'll go and check. [ ]
A. mustn't
B. won't
C. needn't
D. can't
答案：D