Time Quiz: for and since

1. My grandparents walk _____ twenty minutes a day.

2. How long is it _____ you visited your grandparents?

3. We have been dating _____ a long time.

4. That lady has been waiting for the bus _____ noon.

5. I studied for this test _____ three days straight.

6. My family has lived here _____ last March.

7. She has worked there _____ she finished college.

8. I have been calling you _____ half-an-hour.

9. Lisa and Jill have been at the library _____ a long time.

10. My teacher has been sick _____ last Monday.