Put the sentences in positive,question,negative,so/questions forms: 1)my friends(watch)tv yesterday.(what,who)2)liz(walk) the dog last friday.(when,who)3)my mother (cook) dinner yesterday.(when,who)

1. My friends watched TV yesterday.
Did my friends watch TV yesterday?
My friends didn't watch TV yesterday.
What did my friends watch / do yesterday?
Who watched TV yesterday?
2. Liz walked the dog last Friday.
Did Liz walk the dog last Friday?
Liz didn't walk the dog last Friday.
When did Liz walk the dog?
Who walked the dog last Friday?
3. My mother cooked dinner yesterday.
Did my mother cook dinner yesterday?
My mother didn't cook dinner yesterday.
When did my mother cook dinner?
Who cooked dinner yesterday?