Раскройте скобки, употребляя глаголы в Present Perfect.
1. I (to write) this article. 2. I never (to write) articles before. 3. You ever (to write) articles? 4. We already (to learn) a lot of new English words. 5. He just (to have) breakfast. 6. He (not to have) breakfast yet. 7. You (to see) Mary today? 8. She (to buy) a new hat. 9. I (not to see) him since 2011. 10. Why you (to leave) the door open? 11. We (to have) two lessons today. 12. How many lessons you (to have) today? 13. The teacher (to ask) me several questions. 14. He (to be) in London for a week. 15. You (to read) any stories by Jack London? 16. You ever (to be) to New York? 17. Nina just (to finish) her work. 18. My parents (not to come back) from the south yet.