You may use the room as you like, you clean it up afterwards.
A. as if
B. so long as
C. now that
D. as far as
网友回答
A. as if
(答案→)B. so long as
C. now that
D. as far as
解析：考查连词。A.as if似乎，好像B.so long as只要 C.now that=since，既然 D.as far as远及。句意：你可以随便用这个房间，只要你过后把它打扫干净。