Every policeman and fireman ______ on the alert.A、have beenB、wasC、areD、wereB

游客2025-03-13 21

问题 Every policeman and fireman ______ on the alert.

选项 A、have been
B、was
C、are
D、were

答案 B

解析当every修饰一个或几个名词作主语时，谓语动词要用单数形式。

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