Keys ( ) opening the lock in the door.

问题描述:

Keys ( ) opening the lock in the door.
Keys ( ) opening the lock in the door.
A.used for B.are used C.are used to D.are used for
我选的是C老师给大答案是D be used to doing不是被用来做某是吗,我查词典查不到be used for?

同学,为你

选择 D.are used for

知识点:
be used to doing 表示习惯于做某事
be used to do表示...被用来做某事
be used for doing 被用于做…

opening是ing形式的,因此选择be used for doing 被用于做…才是对的.好好看看区别.

例句:
be used to do--Knives are used to cut things.
be use for doing----Knives are used for cutting things




如果认可和满意我的回复,请点击【采纳为满意回答】按钮~、
手机提问的朋友在客户端上评价点【满意】即可.
~你的采纳是我前进的动力~~~