FAST past continous klasa 6

Odpowiedź:
I was riding a bike yesterday. +
I wasn't baking with my mom last week. -
Were you reading this book last night?
+ I was brushing my teeth in the bathroom yesterday.
- I wasn't brushing my teeth in the bathroom yesterday.
? Was I brushing my teeth in the bathroom yesterday?
Pozdrawiam
Licze na naj :D