the people must do everything they can－－ -waste water from runnin_英语解答

the people must do everything they can－－ -waste water from running into rivers
A keep B kept C to keep D keeping
怎么回答,

人气：107 ℃　时间：2020-05-06 11:10:58

解答

选C
must do sth to do sth.
该题考查to do不定式.表示目的.与can无关吗？没有关系，they can是定语从句，修饰everything。