2. He has swum in the ocean recently.

3. We have ridden a camel this week.

4. I haven't eaten the cake yet.

5. Have you heard that song yet?

6. Have you ever run a marathon?

7. They grew tomatoes last year.

8. He met Alice the other day.

9. Nick didn't fall off the bike yesterday.

10. The concert began 15 minutes ago.

11. Did he hurt his leg last week?

12. Did you leave Vladivostok two weeks ago?

13. He was in Pskov in 2018.

14. My friend was a singer.

15. They weren't 18 then.

16. Wbere you in A.in 2019?