—Who is making so much noise in the garden?— the children.A. There areB. They areC. That i

问题补充：

—Who is making so much noise in the garden?

— the children.

A. There are

B. They are

C. That is

D. It is

答案：

A. There are

B. They are

C. That is

(答案→)D. It is

解析：这实际是一个强调句，后面省略了“that are making so much noise in the garden”,故选D.