{01}The classroom is big enough for 25 students for normal use you need more space for special activities.
A.once
B.because
C.if
D.unless
解析:连词辨析。A. 一旦 B. 因为 C. 如果 D.除非。句意:除非你需要更多的空间做特殊的活动,这间教室对于正常使用,容纳25个学生足够大了。选D。 本题选D。 {02}____ you lose the paper document, sign in www.sohunt.com, _____ you might download all you need.
A.If, which
B.So long as, what
C.In case, where
D.Even if, as
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