问题补充：
Why did you go to the wrong class, Mr. Wang
Well, I forget I was supposed to go to.
A. which the room
B. which room
C. what was the room
D. what room was it
答案：
A. which the room
(答案→)B. which room
C. what was the room
D. what room was it
解析：可联系答.案.网客服索取。
