во предложений с модальным глаголом

Must I do it immediately?

Must I come tomorrow?

Must we wait for them?

Объяснение:

1)  i use to live in the country, but now i don't.

2)  did you used to wear glasses?

3)  they didn't use to do any homework.

4)  he has a motorbike.

5)  we used to play in the park when we were little.

6)  she used to cry a lot when she was a baby.

остальные корректные

you doing some weight training?

вы  делаете  какие либо    силовые тренировки?