19 “Who are making so much noise in the garden?” “ the children.”A. It isB. They areC. Tha

问题补充：

19 “Who are making so much noise in the garden?” “ the children.”

A. It is

B. They are

C. That is

D. There are

答案：

(答案→)A. It is

B. They are

C. That is

D. There are

解析：答语为强调句型 It is the children who are making so much noise 之省略。