Passengers are to look out of the window when the train is moving.A.forbiddenB.k

Passengers are ______to look out of the window when the train is moving.

A.forbidden

B.kept

C.prevented

D.banned

试题答案

A

forbid sb to do sth意思为 “禁止某人做某事”, 被动结构为 be forbidden to do sth。而 be kept from doing sth；be prevented from doing sth；be banned from doing sth。