{01} Studying in groups is necessary_____ you want to do well in school.
A.if
B.until
C.unless
D.though
解析: 试题分析:考查状语从句连接词。句意:分小组学习很有必要,如果你想在学校取得好成绩的话。A如果;B直到;C除非;D尽管。故选A。 本题选A。 {02}Students are required to go out in couples, especially in the evenings, with friends ______ they get into trouble.
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