You may use the room as you likeyou clean it up afterwards.A. so far asB. so long asC. in

问题补充：

You may use the room as you likeyou clean it up afterwards.

A. so far as

B. so long as

C. in case

D. even if

答案：

A. so far as

(答案→)B. so long as

C. in case

D. even if

解析：考查连词辨析。A据…；就…；B只要；C以防；D即使，尽管；句意：只要你事后把它打扫干净，你就可以使用我的房间。故B正确。