补全对话

A: Hello, Eric!

B: Hi, Alan!

A:

B: My favorite color is blue.

A:

B: No, they aren't. Mine are long, but these are short.

A:

B: I think they are Bob's.

A: Let's ask(问) him.

B: Hi, Bob.

C: They are blue.

A: Are these pants yours?

C: Yes, they are mine.

A and B: That's OK.
 

A. What are these? B. Whose pants are they, then? C. Is your favorite color blue, Bob? D. Are these blue pants yours? E. Thank you very much. F. What's your favorite color? G. What color are your pants?