This is his only request that the room after being used.
A. is cleaned
B. will be cleaned
C. would be cleaned
D. be cleaned
网友回答
A. is cleaned
B. will be cleaned
C. would be cleaned
(答案→)D. be cleaned
解析： 考查同位语从句。that 后的从句做request的同位语，从句用虚拟语气(should) do,句意：这是他唯一的请求就是房间用完之后应该被清扫。所以选D。