15. -Good morning. Can I help you?
-_______.
-How do you want to send them?
-_______.
A. I think I should send them by airmail;
I'd like to buy three ten-yuan
stamps
B. I want to send these letters to the United States;
I guess I should send it by airmail
C. I'll fly back to the United States;
You may send email to me
D. Stamps, please; I'll write home
B) 下列5题中的句子可以组成一篇小短文,请从所给的四个选项中选出可以填入空白处的最佳选项。