The students have to come back before dark,______?

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问题 The students have to come back before dark,______?

选项 A、do they
B、haven’t they
C、don’t they
D、have they

答案C

解析 have to的反义疑问句助动词用do。

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本试题收录于：公共英语二级笔试题库公共英语（PETS）分类

公共英语二级笔试

公共英语（PETS）

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The students have to come back before dark,______?

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