they can learn some better ways of ( ) thingsA.doing B.to do C.do_英语解答

they can learn some better ways of ( ) things
A.doing B.to do C.do D.does

人气：256 ℃　时间：2020-02-05 19:32:27

解答

A
of是介词,介词后面+动名词（Ving形式）