Exercises for prepositions

We haven't seen each other forsince Sunday.
He has never returned home forsince 1939.
He never returned home forsince the whole week.
It has rained forsince Saturday.
I have had no peace forsince she came.
The performance went on forsince over four hours.
John has lived here forsince the end of the war.
It has rained forsince three days without stopping.
Italy has been a united country forsince 1870.
We will go to the sea-side forsince a couple of weeks.