Прошу, помогите, срочно!!!

1. Yesterday morning I was eating breakfast when my mum walked into the kitchen
2. Yesterday evening I was doing my homework when my friend phoned me. 
3. I wasn't watching TV yesterday when my parent came back from work.
4. While I was having an afternoon nap after school yesterday, my mum was cooking dinner. 
5. Yesterday at 6 p.m. I was exercising.
6. At midday yesterday I wasn't having lunch.