Ответ:

1).I was going to the bed at that moment

I was eating cakes from 9 to 10 o'clock

We were playing football in the morning

She was sleeping all day

2). He was playing basketball

I was not playing  

You were not playing

it was not playing

They were not playing

You were not playing

3).

Was I playing?

Were we playing?

Was he / she / it playing?

Were they playing?

They were not playing