— How can I help you?
—        
— Would you like to send it surface or airmail?
—      
— If you send the parcel with surface email, it will take about 2 months to arrive, whereas with airmail, it will arrive in one week or more.
— That’s a big difference. 　 How much will it cost to send it airmail?
— That depends on the weight. Place it on the scale, please.
— OK.
— That’s 300 grams.       
— That’s not bad. I’ll do that then. Does that include insurance on the contents of the parcel or is that a separate payment?
—       It’s another 5 pounds.
— OK.

A．I suppose airmail will be much more expensive.

B．I want to buy some stamps.

C．I’d like to send this package to China.

D．That’s separate.

E. That’s all right.
F. What’s the difference between surface and airmail?
G. It will cost 10 pounds for airmail.