Помогите пожалуйста. Write questions for the sentences. Answer with the short answer.

The ruler is on the desk.(+)
The pencils are next to the pencil sharpener.(-)
We are in the classroom. (+)
I am eighteen years old.(-)
You are my friend.(+)
He is from China.(-)
She is English.(+)
They are on the bus.(-)

1Is the ruler on the desk?-Yes, it is.2Are the pencils next to the pencil sharpener?-No, they aren't.3Are we in the classroom?-Yes, we are.4Am I eighteen years old?-No, I am not.5Are you my friend?-Yes, you are.6Is he from China?-No, he isn't.7Is she English?-Yes, she is.8Are they on the bus?-No, they aren't.