3) a: where are tony and mary? b: they 11 the bus stop. they're going 12 school. a: have they got 13 books? b: yes, mary is reading 14 book, and tony 15 books in his bag.

B: They 11 are at the bus stop. They're going 12 to school.
A: Have they got 13 any books?
B: Yes, Mary is reading 14 a book, and Tony 15 has books in his bag.