A spokesperson for Solaris International announced that the company would ______on strengthening investor relations in South Ame

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问题 A spokesperson for Solaris International announced that the company would ______on strengthening investor relations in South America.

选项 A、repeat
B、surpass
C、franchise
D、concentrate

答案D

解析查看四个选项我们发现能够与介词on搭配并且文意通顺的词只有concentrate。concentrate on的含义是“集中于(某事物)，专心致志于(某事物)”。

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