选句补充对话，将正确的句子的编号填在横线上。

A. What's in it? B. How many bedrooms do you have? C. Yes, I do. D. Are they on the table? E. Thank you!

A: Welcome to my home. This is the living room.

B: Oh, it's very big.

A: A brown sofa, a yellow table, a blue chair and a big TV.

B:

A: I have 3 bedrooms.

B: Do you have your own(自己的) bedroom?

A: .  Oh! Where are my keys?

B: ?

A: No, they aren't.

B: Look! They are in the door.

A: .

B: You're welcome.