СРОЧНО ПОМОГИТЕ СОСТАВИТЬ 10 предложений паст перфект континиус

1. When granny returned home the children had already been sleeping in their beds for two hours.
2. Peter told us that he had been writing that interesting composition the whole evening. 3. By our coming Mary had been watching the concert on TV for half on hour already. 4. We did not know that Margaret had been waiting for us at the bus stop at four oclock. 5. My brother knew that mother had been cooking that birthday cake for a very long time. 6. Roger said that his team had been playing football at that time yesterday. 7. When Alice entered the classroom the students had already been writing a dictation for 20 minutes. 8. Mike did not say that his younger brother had been playing in the yard the whole day. 9. We knew that our uncle had been waiting for us for 40 minutes already. 10. Nick explained that his cousin had been looking for that present for his mother for a long time.