从方框中选择恰当的句子完成对话，写序号即可。

A: Hi, Cindy！

B: Hi, David! I want to buy some Chinese books in the bookstore.

A: Is Chinese your favorite subject?

B: I like it very much.

A:

B: Because my Chinese teacher is great fun.

A:

B: I have it on Tuesday and Thursday.

A: My Chinese is not good. Can you help me?

B: Sure!

A: Thank you very much.

B:

A. Yes, it is. B. You are welcome. C. Why do you like it? D. When do you have it? E. What do you want to buy?