Change from the active into the passive. 1.The guide met the

Change from the active into the passive. 1.The guide met the tourists at the station. 2. I have just read his letter. 3. Our students are discussing an interesting subject. 4. They will finish their work in time. 5. They had already translated the article when I gave them my dictionary. 6. Will they have planted the tress by the beginning houses in our city every year. 9. She was writing a letter when I came in. 10. Russian scientists have made many wonderful discovers. 11. Who answered the phone? 12. Who did they give the prize? 13. Two teachers asked us at the examination last year. 14. The police are questioning him now. 15. We have already done the work. 16. Who discovered America?