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

问题补充：

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

A. don’t go

B. not go

C. not to go

D. didn’t go

答案：

A. don’t go

B. not go

(答案→)C. not to go

D. didn’t go

解析：句意：老师经常告诉学生红灯时不要过马路。本题考查短语，告诉某人不要做某事，tell sb not to do。故选C.