Tom’s parents( )some presents in his stocking .A.are used to putting B.are used to put选哪个?两者区别?

Tom’s parents( )some presents in his stocking .A.are used to putting B.are used to put选哪个?两者区别?
Tom’s parents( )some presents in his stocking .A.are used to putting B.are used to put
选哪个?两者区别?

Tom’s parents( )some presents in his stocking .A.are used to putting B.are used to put选哪个?两者区别?
选A.BE USED TO DOING STH 是习惯做某事的意思

B
我感觉都不好 应该说used to put

习惯做某事啊
be used to doing

从AB里选一个的话,选A. be used to doing ,表示习惯做某事.B语法不对
不过我同意torakimnara,用used to put似乎更好,used to do,曾经做某事.

A
be used to doing
used to do