The new manager has greatly changed the company______he took over the position.

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问题 The new manager has greatly changed the company______he took over the position.

选项 A、if
B、since
C、although
D、while

答案B

解析 本题考查句意和连词的用法。分析句子结构可知,主句部分为现在完成时,而从句部分为一般过去时。since意为“自从……以来”,无论从意义上还是从时态上都符合句子的要求,因此确定B)为本题的答案。
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