1 . 听下面一段较长对话，回答以下小题。
1. Who might the speakers be?

A．Police officers.

B．Observers.

C．Passengers.

2. What did the old lady say?

A．She didn’t see anything.

B．The traffic lights broke down.

C．The red car was driving very fast.

3. What were the kids doing when the accident happened?

A．Crossing the street.

B．Playing in their front yard.

C．Standing on the street corner.

4. What caused the accident according to Mr. Bates?

A．The red car.

B．The dog.

C．The blue car.