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The country has already sent up three unmanned spacecraft, the most recent __________ at the end of

题目简介

The country has already sent up three unmanned spacecraft, the most recent __________ at the end of

题目详情

The country has already sent up three unmanned spacecraft, the most recent __________ at the end of last March.

A．has been launched	B．having been launched
C．being launched	D．to be launched

题型：单选题难度：偏易来源：不详

答案

C。

由于动作于去年的三月底就已经发生，所以不能选表示未来动作的不定式，即不能选D; 又由于句子用了具体的过去时间状语(at the end of last March)，故不能选完成式，即不能选A和B。

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