Is this Pat's picture?怎么答

Is this （ A：a hill's picture B:a picture's hill C:a picture She is going to stay with Pat`s family.(划线提问） This is my cof this's a picture let's () this picture what is this picture Is this picture （ this is a picture of my mum's birthday party this is a picture there"s a mountain in it This is a picture of Nancy's family This artist's picture is very famous 这句话对么? This is a picture of Luoy's family.的疑问句 Look !this is ().A a classroom 's picture.B a picture of a c