a.Do Cathy brush her teeth? Si c'est au passé , Did .answer:Yes , of course , so do John
b.Do Cathy and John tidy their room? si c'est au passé Did.Answer: Uh , quite often ...
c.Can Cathy set the table? No ! That's horrible!
d.Do the children help to cook dinner? Um , somethimes but almost never , don't worry , they'll be wise when you will get back them....