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精英家教網 > 高中英語 > 題目詳情

________the working efficiency,the boss allows the employees to have a coffee break.

A.ImprovingB.To improve
C.Having improvedD.Improved

B

解析句意為:為了提高工作效率,老板允許員工有一個喝咖啡休息的時間。不定式作目的狀語,故選B項。

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