More effort should be put into (improve) our English skills.答案一定是_英语解答

More effort should be put into (improve) our English skills.答案一定是improving吗?
填to improve不定式表目的行不行?

人气：114 ℃　时间：2019-08-19 18:51:26

解答

两种说法：1.into improving 因为into是介词后面的动词必须是Ing形式.
2.should be put to improve 就是动词不定式表目的了.