1. B: Who is thinner, Amy or Sally?
G: Sally.
2. G: Who is taller, Jane or Mary?
B: Mary.
3. G: Whose bag is it? Is it yours?
B : No, it isn’t. It’s Jack’s. Mine is bigger than Jack’s.
4. G: Who is younger, Tom or Sam?
B: Tom is ten. Sam is eight.
5. G: How old is your grandmother?
B: She is 50 years old.
G: What about your grandfather?
B: Oh, he is 52 years old.