Раскройте скобки, употребляя глаголы в Present Perfect или Past Indefinite.

1. I (meet) two of my friends today. I (meet) them on my way to school. 2. A month ago my uncle (build) a new house in the country. We (visit) it recently and (enjoy) ourselves very much. 3. He (forget) to close the window when he (leave) the house. 4. He (write) several letters this week. 5. Where Helen (go)? I don't see her here. — She (go) home an hour ago. 6. When the concert (to begin)? 7. I don't think I ever (to see) such a beautiful garden as this one. 8. Jack London (to be born) in San Francisco in an extremely poor family. 9. You (to read) many books by Jack London? 10. How careless you are! You (to break) your mother's favourite cup.