英语：句型转换

(1)He often went to work on foot，but he doesn't do it now.(合并为一个句子

He ____ ____ go to work on foot.

(2)He used to go to the cinema at weekends.(改为一般疑问句）

_____ he ___ ____ go to the cinema at weekends?

(3)He ____ ____ ____ fall asleep in class.

1. He used to go to work on foot.

2. Did he use to go to the cinema at weekends?

3. He often used to fall asleep in class.

USED TO

DID USE TO

第三个要干嘛？