do you kown what she used to do还是将used改为 use,要不要呢

do you kown what she used to do还是将used改为 use,要不要呢 used to和be use to 加do还是doing be used to doing,be used to do,used to do,be used for,be use use的用法.used to do sthbe used to do sth be used to doing sth 关于use的用法used to do sthbe used to do sthbe used to doing sthu what did he后面为什么是加used to do不是use to do used to do是过去常常,那use to do是不是现在常常呢 use to,be used to do,be used to doing和be used for的区别 used to do改为否定句 used to do used to doing be used to do 英语used to do used to do sth.