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I need one more stamp before my collection . [ ] A.has completedB.completes C.ha

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I need one more stamp before my collection . [ ] A.has completedB.completes C.ha

I need one more stamp before my collection ______.

[]

A.has completedB.completesC.has been completedD.is completed

试题答案

答案:D

解析:

时间状语从句中的主语是 my collection,谓语动词要用被动语态的一般现在时。