Do/ does
Do/does they have black eyes?
Do they have black eyes?
He has/have a big nose
He has a big nose
Carlos's son have eyes blue
Carlos's son has blue eyes
Do/does we have brown eyes?
Do we have brown eyes?
She don't have beautiful eyes.
She doesn't have beautiful eyes
Does/do marge's children have black eyes?
Do marge's children have black eyes?
I have
They has black hair.
They have black hair