Thismachineisveryeasy .Anybodycanlearntouseitinafe... 国语站 题库 7.98K 大中小设置文字大小 问题详情: This machine is very easy . Anybody can learn to use it in a few minutes. A. operating B. to be operating C. operated D. to operate【回答】D 知识点:非谓语动词题型:选择题 TAG标签:#