To be - exercises

To be: present simple

Short answers - write

Are you the doctor? Yes, .
Are they in London? No, .
Is that dog yours? No, .
Am I late? No, .
Are bats mammals? Yes, .
Is this your pencil? Yes, .
Is that our house? No, .
Are you our teacher? No, .
Am I the first? Yes, .
Are the boys here? Yes, .
Is this my coat? No, .
Are these your ties? No, .