--look over there.is ( ) your brother?
--yes,it is.
A.that girl B.this boy C.that boy
--Is Jack your brother?
--( ).his father is my uncle.
A.He is not B.Yes,he is C.No,he isn't
--Tom's mother is your sunt.So he is your ( )
A.cousin B.brother C.uncle
--are those Jim and Mike?
A.Yes,he is . B.Yes,those are. C.No,they aren't.
--These are her ( ).
A.father B.mother C.parents