Поставьте глаголы в правильном времени.1. Columbus (discover) America more than 500

Поставьте глаголы в правильном медли.
1. Columbus (discover) America more than 500 years ago.
2. I (not see) you for more than a week.
3. I (not eat) brown bread since I was in Moscow.
4. Since when (you know) him?
5. Old George (not be) here for years.
6. They (come) here a month ago.
7. He (not speak) to me for over three weeks.
8. How long ago (you arrive) here?
9. I (buy) one like it a month ago.
10. We (finish) our supper an hour ago.
11. She (not have) a holiday for four years.
12. I (not play) the violin since I was a little boy.
13. My brother (not write) to me for months.
14. I (not see) you since we met a year ago.