Fill in the gaps with since or for 1.1 haven039;t met

Fill in the gaps with since or for 1.1 haven't met my classmates ... five years. 2. Grandma has had a headache ... the weather changed. 3. They have been in this business ... twenty years. 4. It hasn't 136 rained ... a month. 5. Andrew has been very busy ... the conference began. 6. We've had the same director ... twelve years. 7. He hasn't spoken ... his dog died. 8. My relatives haven't visited me ... quite a long time. 9. Nothing special has happened ... yesterday. 10.I have passed all my exams ... the last six days. 11. They have been up ... early morning. 12. Margie has been unwell ... she came back from the North. 13. Nick has had a beard ... he was forty. 14. Mr. Stone has been our family doctor ... ages.