We ______ very close，but things have changed recently.

We ______ very close，but things have changed recently.
A、used to be
B、are used to being
C、are used to be
D、were used to being
【正确答案】：A
【题目解析】：表示“过去常常”用used to do(be). 译文：我们过去非常亲近。但近来事情已经发生变化。