1. peter started doing his mathematics homework 1 hour ago. he is still doing it and now he is at the 3rd exercise. (do / for 1 (do / 2 2. chris is from america. he is working in russia at the moment. he came to russia in may. (work / since… (visit / 5 russian cities / 3. helga osmond is an actress. she began acting when she was 14. she is presenting her 5th film this year. (act / since she was (act / 5