选择合适的选项补全对话。

A. How many pupils are there in his class? B. Is there a computer on every pupil's desk? C. I visited John's school. D. How many pictures are there? E. What's on the wall?

Sam: What did you do yesterday?

Daming:

Sam: Is his classroom big?

Daming: Yes, it's very big.

Sam:

Daming: Forty pupils, twenty-­one

boys and nineteen girls.

Sam:

Daming: No, but there is a computer on the teacher's desk.

Sam:

Daming: Some pictures.

Sam:

Daming: There are five pictures on the wall.