Исправьте ошибки.
1.Are you skating last Sunday?
2.He had been abroad five years ago.
3.When Icame home, mother already cooked dinner.
4.By eight o'clock yesterday I did my homework and at eight I had been playing the piano.
5.When Jane arrived, I was waiting for two hours.
6.At this time yesterday I sat at the theatre.
7.Mr Davis Had smoked for 30 years when he finally gave it up.

1)Did you scat last sunday 2)he haS... 3)...,mother had cooked dinner 4)have been 5)I was waitin for two hours, befire Jane arrived 6)in the theatr (in) 7)has smoked как-то так