Look at the sentences and complete the rules with on,at or in 1 we use with days 2 we use with times 3 we use with months 4 we use with dates 5 we use with parts of the day (morning,afternoon,evening) 6 we use with night and the weeked 7 we use with years

1. on
2. on (искл.) 
3.in
4.in 
5.in(искл.)
6.at (искл.)
7.in

А ещё предлог перед "the weekend" зависит от изучаемого языка:
on the weekend (брит.)
at the weekend (амер.)