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

外语类 专四 已帮助 人

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!

热搜:n维列向量组a1,an-1线性无关,且与非零向量正交