(二) Tony: What birthday present did you buy for Grandmother?Mary: A cell phone. Tony: A cell phone? Why? She already has one, doesn't she? Mary: Yes, she does. But I think that one is old-fashioned. What did you buy for her? Tony: I bought a dancing machine.Mary: A dancing machine! It's not cheap. Tony: It's very expensive, of course, but I asked Mom and Dad for help. It's a great present because all of us can enjoy it together!
【題組】33.What is the relationship between Tony and Mary?  relationship關係
(A)Friends.
(B)Cousins.
(C)Classmates.
(D)Brother and sister.