we have a pretty good idea of what it takes for the market___well,so our company is operating succe

题目

we have a pretty good idea of what it takes for the market___well,so our company is operating succe
A.to function B.function C.functioning D.functions
选哪个答案?请帮忙解释下,并翻译.谢谢!

答案

we have a pretty good idea of what it takes for the market_A.to function__well,so our company is operating successfully.
我们比较清楚令市场运作良好的必要因素,所以我们公司的营运[很成功.