Question

ПОМОГИТЕ ПОЖАЛУЙСТА!
I know how to use past models could and had to.
Complete the sentences with could and had to.
НАПРИМЕР:By the time Mozart was four he could play the violin.
1)Marie/do chores/yesterday (had to)
2)Bobby/study English /last night (not have to)
3)The khights/pull the sword /out of the stone (could not).
4)John/ride a bike /when he was three (could not )

Answer 1

marie had to do chores yesterday
bobby don't have to study English last night
the knights could not pull the sword out of the stone 
john could not ride a bike when he was three