Ответ:

1 was watching

2 didn't hear

3 were having

4 woke up, had a shower, got

5 were singing, was shining

6 burned

7 were sleeping

1. was watching (процесс начался и не закончился в 6 часов)

2. Didn't hear

3. Were having  (присутствует прерывание, а прервать можно только Cont.)

4. Woke up, Had, got (последовательные действия в прошлом)

5. Were singing, was shining (описание заднео плана в истории)

6. Burned (единичное действие в процессе другого)

7. Were sleepeng (стоит while)