1．Where does this conversation most probably take place?

A．On the airplane.

B．In the bookstore.

C．At the post office.

2．What’s the probable relationship between the speakers?

A．Waitress and customer.

B．Husband and wife. 

C．Friends.

3．Where is Mary’s husband now?

A．At the working place.

B．Outside having lunch.

C．At home.