Correct the mistakes:1.- How long does he live here? - Since

Correct the mistakes:
1.- How long does he live here? - Since September.
2 what are you going to do the next summer
3 those students have discussed Text Three last Friday
4. - who have lunch at home? - my grandparents do.
5 I think you're going to get a letter today.
6 there was not bus stop near our school.
7 the baby is not criing. the baby is sleeping.

Пожалуйста помогите!!!!!!!!!!!!!