A．He went to his office.      
B．He turned on the computer.                 
C．He checked his mails.
D．He listened to the radio.

A．Chicago.          
B．San Francisco.         
C．Hong Kong.           
D．New York.

A．Reminding the man of their mom's birthday.
B．Asking the man to help him book an air ticket.
C．A big fire in Hong Kong yesterday.
D．Whether he is going to visit San Francisco during vacation.