-- Lily, is this ___ ipad?    --No, it's not mine. I think it's Lucy's.

—Is this       ruler?—No.       is over there.

My mother has two brothers. One is a doctor, ____ is a lawyer.

 Paul learns English ________. He often goes to the English Corner at weekends.

— Is this Tommy’s suitcase?— No, it is not          . It is          .