Put the verb into the correct form (Past Simple or Present Perfect)

Put the verb into the correct form (Past Simple or Present Perfect). 1. I … . (to see) her recently. She … (to change) a lot. 2.John … . (to move) to a new house three days ago. 3. She … . (to work) at this office for 10 years. Now she … (to decide) to retire. 4. I don’t think I … (to know) your wife. I … . (not to meet) her. 5. John … . (to see) Susan last week but he … . (not to see) her since. 6. This African boy … . (never to see) snow. 7. It … . (to happen) when I was out. 8. She … (to take) the envelope, … (to open) it and … . (to take) a small sheet of paper out. 9. I … . (not to see) him of late. 10. When you … . (to see) Mr Brown?