题目内容

Sales have shown some improvement _________we launched the new product last year.（2016年6月第29题）

A. until
B. unless
C. since
D. although

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Big changes have taken place at the Marketing Department _________the new manager came.(2015年12月第30题)

A. before
B. after
C. since
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A. as well as
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A. if
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A. in case
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