Перепишите предложения в Present Progressive или Present Perfect:

1. He has already (to learn) the rule. 2. I am (to write) an exercise. 3. What is he (to do)? — He is (to read) a newspaper. 4. Have you (to | read) any stories by Jack London? 5. What are you (to do) here? — I am (to write) a letter to my friends. 6. Who has (to write) this article? 7. What language are you (to study)? 8 We have already (to learn) a lot of English words. 9. What is she (to teach) them? 10. Who has (to teach) you to do it? 11. He has just (to do) something for us.