The government has taken some measures to solve the problem of unemployment, but it may be some time the situation bees better.
A. before
B. since
C. after
D. unless
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(答案→)A. before
B. since
C. after
D. unless
解析:考查连词用法。“It be+一段时间+before…”是固定结构,该结构的意思是“要过……(长)时间才……”。when“......的时候”;since“从......开始”;unless“除非”;根据题意:政府已经采取措施解决失业问题,但是还要一段时间形势才能缓解。D最佳。