Fill in the gaps with for or since. steven has been a he left school we have had three tests tuesday. the couple have stayed here three days. i have had my player ten weeks. molly has had the christmas.

Steven has been a worker since he left school.
We have had three tests since Tuesday.
The couple have stayed here for three days.
I have had my player for ten weeks.
Molly has had the player since Christmas.

Since, since, for, for, since