问题
选择题
You ______ write letters to your cousin. You can chat with her online. [ ]
A. can't
B. needn't
C. shouldn't
D. mustn't
答案
答案：B
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You ______ write letters to your cousin. You can chat with her online. [ ]
A. can't
B. needn't
C. shouldn't
D. mustn't
答案：B