题目内容
根据句意选择正确答案
You ________ (must/ mustn't) talk with food in your mouth at the dinning table.
答案:mustn't
解析:
解析:
点拨:句意是“你一定不要……” |
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题目内容
根据句意选择正确答案
You ________ (must/ mustn't) talk with food in your mouth at the dinning table.
点拨:句意是“你一定不要……” |