1．Where are they talking?

A．In a hospitalB．In a store C．In a post office

2．When does the library close on Sunday?

A．At 6 P．m． B．At 9 P．m． C．At 10 p．m．

3．What is the possible relationship between the two speakers?

A．Husband and wife 

B．Doctor and patient 

C．Teacher and student