题目内容：

1 

1. Which road sign tells us that we must NOT turn right?

2.Outside our school there’s a sign like this. What should the drivers to when they see it?

A. They must stop the car immediately and wait there.

B. They must take a U-turn there.

C. They mustn’t even stop the car in that area.

D. They mustn’t drive the car into that area.