Question

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

Answer 1

B

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。
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。