“Can I help you?”

“________.”

[　　]

－Can I have a look at your new shoes, please.

－________

[　　]

A．Why not?

B．But you can't touch them.

C．Excuse me.

D．Yes, help yourself.

—Can I help you?

—__________.　　　

[　　]

A．What do you help me?　　   　B．Sure.

C．Yes, please.　　　　　　   　D．Of course.

—_________?    

—Yes, please. I want a basketball.

A．What can I do for you              B．Excuse me    

C．Can you help me                  D．Can I help you