Questions 19 to 22 are based on the conversation you have just heard.

A．They want to go downtown.
B．He wants to go to the park, but she doesn’t.
C．He doesn’t know where to park the car.
D．He wants to find out where the park is.

A．Have to buy a special electronic ticket.
B．Have to travel a long way to visit the university.
C．Need an expensive device designed especially for the museum.
D．Need a computer linked to a telephone.