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单选题英语

2023-02-15

Bob would have helped us yesterday,but he________.

A．was busy

B．is busy

C．had been busy

D．will be busy

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参考答案

A

答案解析

【应试指导】本题考查时态。句意：Bob昨天本要帮助我们的，但是他太忙了。前句表示对过去的虚拟，而but之后表示过去的客观事实，故用一般过去时态。

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