听下面一段较长对话，回答以下小题。
【小题1】What was the man doing when he saw the accident?

A．On his way to the museum.

B．On his way to the library.

C．On his way home.

【小题2】What was the truck driver doing before the accident?

A．Driving from the opposite direction.

B．Parking by the side of the street.

C．Making a phone call in the truck.

【小题3】Who called the ambulance?

A．The woman.

B．The man.

C．A man nearby.

【小题4】What’s the woman’s suggestion to the man?

A．Be careful when walking.

B．Try to forget the experience.

C．Don’t ride a motorbike.