Complete using on, in or at

Complete using on,in or at.
1:There are lots of people______at the restaurant.
2:The people who live _______number 44 are away on holiday.
3:Gorillas live _______forests in Africa and eat fruit.
4:You should go to the Louvre when you're_______Paris.
5:What does that sign______the way say?
6:What did Ethan say________his letter?
7:Have you heard of the strange statues_______Easter Island?
8:Do you really want to spend the whole day____the beach?