make a contribution to跟动词是用do还是doing?为什么?
make a contribution to跟动词是用do还是doing?为什么?
make a contribution to .do还是doing?
make a great contribution to do还是to doing?
make a contribution to+do还是ing
make a contribution to do sth 和make a contribution to doing
make a contribution为什么后面加to doing
make a difference to这个词组后面到底是跟原型do还是跟doing
make it a rule to do 还是 DOING 为什么
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 decision to do 还是 doing?
英语谓语动词是用to do,doing,还是do