是make a contribution to 还是make contribution to?若两个都对两者有什么区别?

是make a contribution to 还是make contribution to?若两个都对两者有什么区别? make a contribution to make a contribution to+do还是ing make a contribution to .do还是doing? make a contribution to 造句 make a contribution to中的contribution可换成devotion吗? make a great contribution to do还是to doing? 关于make a contribution to的问题 make a contribution to do sth 和make a contribution to doing make a contribution to跟动词是用do还是doing?为什么? make contribution to contribution要加s吗 make a contribution