You may use the room as you like, you clean it up afterwards.A.as ifB.so long asC.now thatD.as far as
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B解析试题分析：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。考点：考查连词。
点评：本题四项均是从属连词，引导状语从句。尤其注意now that引导的是原因状语从句，相当于since，表达“既然”之意。即学即练：He won't change his mind ______ you go and try to persuade him yourself.A．Since B．Until C．as if D．even if选D，考查 even if引导让步状语从句。