the old machine ____ the room wet a used to keep b was used keep _英语解答

the old machine ____ the room wet a used to keep b was used keep c ussed to keeping dwas used

人气：363 ℃　时间：2020-02-01 08:04:48

解答

D sth be used to do 是指某物被用来做某事.这句话很明显意思是这台旧机器是被用来保持房间潮湿的.sorry答案是a，应该不是被动语态把。哦，不好意思，应该是A，我没考虑清楚。used to do sth是指过去常做某事。那就应该理解为这台旧机器过去总是把房间弄湿，这样更合逻辑