选择框内的单词填空，使对话意思完整，在横线上写出所选单词的编号。

A. are       B. was       C. is    D. were    E. visit

Boy: Come to my new school, Grandpa. It's so big and modern.

Grandpa: How big is it?

Boy: There four classroom buildings. And there a computer room on each floor. We have lessons with ipads.

Grandpa: What was your school like before?

Boy: There only two classroom buildings. And there only one computer room in the whole school.