Use"used to/didn't use to" to rewrite the given sentences to show how things were different.
1,There are so many tourists.
2,The streets are very dirty.
3,The houses are very expensive.
4,He doesn't smoke nowadays.
5,We don't have a car park any more.
6,I don't usually do a lot of exercises any more.
7,They have a central heating in the living room.
8,The car parks are always full of cars.