1.Does he used to climb the hills every weekend?
2.His father used not to be a teacher
3.Study the stars is interesting
4.hard to make
5.when I eat breakfast
6.When bought
7.used to
8.used not to
9.Does used to play
这么简单啊:
自己想吧!!
1.Did he used to climb the hills every weekend?
2.His father usedn't to be a teacher.
3.Studying the stars is interesting.
4.diffult to make.
5.when having breakfast.
6.Because bought.
7.used to.
8.didn't useed to.
9.Did used to play.