Complete the sentences using the correct tense of the verbs.

1. My friends have been to Kizhi three times. 2. They will have restored this church by Christmas. 3. Prince Vladimir Monomakh found Vladimir in 1108. 4. Her back aches. She has been planting flowers all morning. 5. What did you do last weekend? 6. What were you doing at this time last Sunday? 7. My brother had learned how to ride a pony by the time he was 5. 8. He's happy. He has been sailing on the lake all day. 9. Susan’s parents haven’t come back yet. 10. We hadn’t returned by 11pm. 11. She hasn’t traveled by ship. 12. Nick invited us to his birthday party last year. 13. At this time last week we were hiking in the mountains. 14. She feels very cold. She has been waiting for the tram for an hour.