Driversarewarned___________whentheya

发布时间：2020-07-25 14:52:52

Drivers are warned___________when they are tiredA.to driveB.not driveC.not to driveD.not driving

网友回答

C解析本题考查动词用法。warn sb not to do sth，表示警告某人不要做某事。句意：司机被警告当他们劳累的时候不要开车。
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