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单选题公共英语二级

2010-07-24

There are no lights on and no one answer the doorbell．They＿＿＿be at home．

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参考答案

D

答案解析

本题考查情态动词的用法。选项A表示“禁止，不允许”，call用在否定句或疑问句中表示推测，故选D。

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