Woolen clothes are used for _ warm.A.kept B.keep C.to keep D.keep_英语解答

Woolen clothes are used for _ warm.A.kept B.keep C.to keep D.keeping 应该选哪个啊?

人气：112 ℃　时间：2020-03-17 19:36:34

解答

D keeping
be used for doing sth.被用于做某事
for是介词,后跟动词的ing形式