4.I used to live in the suburbs of the city but now I live in the city centre
5.In the past she didnt use to play volleyball but now she is into it
6.I think it is going to rain soon
7.She didnt use to get up early (?)
8.I suppose that they arrive on time next week.
9.She usually does her homework in the evenings
10.It's the first time I'll try parachuting (?)
11.She hasnt been to Paris yet(?)
12.He was in Warsaw years ago(?)
13.They'll meet probably at the concert on Sunday evening (?)
14.I'll call you as soon as I'll be back home (?)
15. (?)