1. there is the house where my family lives
2 we have bought a lot of candies for you
3 at the time we came there, the pool wasn't operating
4 they owned this building since they have bought it in 1999
5 he won't be taking the course in a month
6 they have gone to the city's park
насчёт 5-го не уверена
there is the house where my family lives
we have bought a lot of candies for you
correct
they have bought this building since they owned it in 1999
idk
they have gone to the city's park