Решите заданиЯ даю 20б

1) when were you born? i was born in 1980 .                                                        2)the light went off and the orchestra started playing.                                       3)when i came into the kitchen mother was cooking dinner.                               4)we were washing the floor from 3 till 4 yersterday.                                         5)at 7 yersterday i played the piano.                                                                 6) when i came home mother had already cooked dinner.                                   7)tom had translated the text by 7.                                                                   8)she  was seeing the film for 1 hour when i rang her up.                                     9)where  were you yesterday?                                                                             10)did you finish school last year?