A-A+
A spokesperson for Solaris International annou
问题详情
A spokesperson for Solaris International announced that the company would ______on strengthening investor relations in South America.
A．repeat
B．surpass
C．franchise
D．concentrate
参考答案
正确答案：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)”。
