— Where are your brothers?— .A. He is at schoolB. He is in his roomC. Yes，they are D. I do

— Where are your brothers?
— .
A. He is at school
B. He is in his room
C. Yes，they are
D. I don’t know

A. He is at schoolB. He is in his roomC. Yes，they are (答案→)D. I don’t know解析：本题的问句表示地点，主语人称是复数，是特殊疑问句，AB主语为单数不选，C为一般疑问句的回答不选，故本题选D。

这个答案应该是对的