问题
选择题
You _____ pay too much attention to your assignment, for it is ever so important. [ ]
A. mustn't
B. can't
C. needn't
D. oughtn't to
答案
答案：B
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You _____ pay too much attention to your assignment, for it is ever so important. [ ]
A. mustn't
B. can't
C. needn't
D. oughtn't to
答案：B
