This ATM has been out of service for a few days. It should______ last week.

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问题 This ATM has been out of service for a few days. It should______ last week.

选项 A、fix
B、be fixed
C、have fixed
D、have been fixed

答案D

解析 “情态动词+have done”有两种意义:①表示对过去事情的一种推测;②表示与过去事实相反的情况。本句中的should have done表示与过去事实相反的情况,即“本应该做某事,但事实上却没有做”,是一种虚拟语气的用法。且it与fix之间是被动关系,因此选D项。
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