Question

 The teachers often tell their pupils _____    across the road when the traffic light is red.

A. not go   B. not to go        C. don’t go         D. didn’t go

Answer

B               

【解析】             

试题分析：考查动词用法。句意 老师经常告诉学生当红灯时不要过马路。考查tell的用法。 Tell sb not to do 告诉某人不要做某事。Tell后也可跟宾语从句，their pupils mustn’t  across the road when the traffic light is red，这时应用mustn’t故C项错误。因此选B项。          

考点：考查动词用法。