选择合适的选项补全对话。

A: Hi! ?

B: I'm great. What are you doing here?

A: . What about you?

B: I want to send a postcard to my friend.

A: Oh, I see.

B: Can you tell me how to write a postcard?

A: ! . Then write what you want to say to your friend on the left. You should put the address on the right and .

B: Oh, I see. Thank you very much.

A. don't forget the stamp B. How are you today C. Sure D. I'm writing a postcard here E. Write the date first