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

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