Срочно помогите! Очень нужно пожалуйста. Заранее спасибо!

1 what are you doing... 2 how often do they visit... 3 have been waiting/have waited 4 has been sleeping 5 have never been 6 was cooking-rang 7 has been writing- has written 8 looked-left-drove 9 were you doing-called 10 have ever given 11 didn't go 12 had already cooked

1. what are you doing tonight? 2. how often do they visit their parents? 3. I'm waiting for you for 2 hours. 4. He has been slipping since .......... 5. I've never been to Australia. 6. Peter was cooking when the phone rang. 7. Betty had been writing since 9 o'clock. She has written seven reports up to know. 8. took, left,drove 9. What were you doing when we called you yesterday? 10. you have ever given  11. I didn't go to school yesterday 12. had already cooked dinner