There --- a dirty lake, now here is a beautiful garden. A used to B used to be C used to have D is

问题描述:

There --- a dirty lake, now here is a beautiful garden. A used to B used to be C used to have D is

B get/be used to doing 过去习惯习惯 uesd to 过去做

答案:B
used to be 过去有
不明白的再问,多谢!