问题
选择题
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
答案
B
题目分析：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。