The students must hand in their essays in a week, ? No, they .A、need

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问题 The students must hand in their essays in a week, ______? No, they ______.

选项 A、needn’t they... mustn’t
B、mustn’t they... mustn’t
C、mustn’t they... needn’t
D、shouldn’t they... should

答案 C

解析考查情态动词的用法。陈述句中情态动词must表示“必须”时，附加疑问部分用mustn’t表示“禁止，不可以”；但表示“不必要”时，则用needn’t。由此可见，C选项为正确答案。

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The students must hand in their essays in a week, ______? No, they ______.A、need