(Passengers) (are warned) not to (get off) a bus while (moving).A、PassengersB、a

游客2025-03-11 6

问题 (Passengers) (are warned) not to (get off) a bus while (moving).

选项 A、Passengers
B、are warned
C、get off
D、moving

答案 D

解析主谓一致错误，应改为it is moving。因为主句的主语是passengers，而moving的主语是 bus，所以不能省略。

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Accordingtothepassage,whatdothepassengersusuallyseewhentheyareona