考试
2020-03-13 23:07:59

6135 We must focus ______ our

题目描述

We must focus ______ our sales force as the chief means of improving trade.



A. to

B. in

C. on

D. with

请帮忙给出正确答案和分析,谢谢!

答案解析

参考答案:C

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