1) we cooked a cake
we didn't cook a cake
did we cook a cake?
2) she liked this film
3) he wanted some apples
4) they tidied the room
they didn't tidy the room
did they tidy the room?
5) she cleaned her teeth
6) we woke up early yesterday
7) they ate fruit
they didn't eat fruit yesterday
did they eat fruit yesterday?
8) we swam
9) I saw
10) she had a car last year
she didn't have a car last year
did she have a car last year?