Безотлагательно!!!!!Complete the sentences with at,in,on, or no preposition (-)1 i039;d like

Безотлагательно!!!!!Complete the sentences with at,in,on, or no preposition (-)
1 i'd like to study law_university
2. We have to hand homework to the teacher_next Monday
3. Hurry! The lesson starts_five minutes
4. My school is in Marshall Street, right _ the city centre
5. What are you doing_Christmas day?
6. There's a garden _ front of the house
7. Some 50 years' time, traditional notebooks will be a thing of the past
8. Some students can't concentrate when they are sitting_their desks
9. Let's meet_the front of the school building
10. We're having a school party _ Saturday night