考试
2020-03-16 06:46:23

2317 An ambulance was waiting

题目描述

An ambulance was waiting in the street, somebody______hurt or killed.A.should have beenB.m



An ambulance was waiting in the street, somebody______hurt or killed.

A.should have been

B.must have been

C.should be

D.should not have been

请帮忙给出正确答案和分析,谢谢!

答案解析

B本题综合考查情态动词,从句是过去的事实

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