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专题检测卷(十)
状语从句
(限时15分钟)
1. （2012·天津二模）How long do you suppose it is _______ he arrived and began to work in the Binhai New Area?
A. when B. before C. after D. since
2. (2012·遂宁模拟)Children should be instructed to put things _______ they belong in their early childhood.
A. where B. in which
C. to which D. what
3. (2012·吉林二模)The government has taken some measures to solve the shortage of electricity, but it may be some time _______ the situation improves.
A. since B. when C. unless D. before
