从方框中选择合适的选项补全对话。
A. Where is the computer room?
B. Is that the computer room?
C. Do you have a computer room?
D. This way, please.
E. How many classrooms are there in your school?
Lucy: Welcome to our school.
John: Oh, it's so big! 【小题1】
Lucy: Twenty.
John: 【小题2】
Lucy: Yes, we do.
John: 【小题3】
Lucy: No, it isn't. It's the teachers' office.
John: 【小题4】
Lucy: It's on the second floor. 【小题5】
John: Thank you.