5. I'll never forget the town in which there ________ a clean river and many big tall trees.
A、used to be ;
B、used to have ;
C、was used to being ;
D、was used to having
发布时间:2025-07-19 08:27:25
A、used to be ;
B、used to have ;
C、was used to being ;
D、was used to having