Поставте там где надо артикли. Заранее

My brother-in-law is a writer and his wife is a doctor.

These are _difficult sentences.

I have a father, a mother and a little sister.

What’s the matter with you?

We are _ students of the English faculty.

There came a knock at the door.

Benny is already in _bed.

Once there lived a captain brave.

_Doctor Smith is still at the hospital.

This isn’t _snow, this is _ice.

She has a velvet dress.

He is a good-looking young man of 20.

There are _beautiful flowers in the park.

Is she a college graduate?