Раскройте скобки, употребляя глаголы в требующейся форме, так чтоб получить Present

Раскройте скобки, употребляя глаголы в требующейся форме, так чтобы получить Present Continuous или Present Perfect.
1. What are you (to do) here? - I am (to write) a letter to my friends. 2. Who has (to write) this article? 3. What language are you (to study)? 4. We have already (to learn) a lot of English words. 5. What is she (to teach) them? 6. Who has (to teach) you to do it? 7. He has just (to do) something for us. 8. Have you (to find) the book? 9. What are you (to look) for? 10. What are you (to talk) about? 11. We have just (to talk) about it. 12. He has just (to say) something about it. 13. She is (to tell) them some interesting story. 14. He has (to tell) us nothing about it. 15. She has (to tell) them some stories about dogs. 16. We have (to have) two lessons today. 17. They are (to have) a meeting. 18. She has not (to speak) yet. 19. They have (to ask) me several questions. 20. He has already (to learn) the rule. 21. I am (to write) an exercise. 22. What is he (to do)? - He is (to read) a newspaper. 23. Have you (to read) any stories by Jack London? 24. I am (to answer) the telephone right now. 25. He has (to fix) his car and now he is (not to have) any trouble with the brakes anymore. 26. Have you just (to hear) tomorrow's weather forecast? 27. I have (to read) this interesting book lots of times. 28. I don't think he has ever (to do) it.