2A. Do you have any children?
B: Yes, we do - two boys and a girl.
3A. Do your children speak English?
B: Yes, they do. Their English is very good.
4A. Do you have coffee for breakfast?
B: Yes, we do - coffee with milk.
5A. Do you need a new car?
B: Yes, our car is very old.
¡Espero haberte ayudado! ;)