The ruler is on the desk.
Is the ruler on the desk? Yes, it is.
The pencils are next to the pencil sharpener.
Are the pencils next to the pencil sharpener? Yes, they are.
We are in the classroom.
Are we in the classroom? Yes, we are.
I am eighteen years old.
Am I eighteen years old? Yes, I am.
You are my friend.
Are you my friend? Yes, you are.
He is from China.
Is he from China? Yes, he is.
She is English.
Is she English? Yes, she is.
They are on the bus.
Are they on the bus? Yes, they are.