Passage Two
Questions 29 to 31 are based on the passage you have just heard.

A．The public telephones often go wrong in malting a long distance call.
B．It is not very expensive to make a long distance call on a public telephone.
C．You’ll probably not be charged for dialing a wrong number in matting a long distance call.
D．You’d better not make a long distance call on a public telephone for it charges too much.