(34-36) Nina: What is your favorite animal? Sam: Koalas. How about you? Nina: My favorite animal is guinea pigs. I have three guinea pigs. Sam: Really? Are they big? Pigs are big. Nina: No, they are not pigs. Pigs are big, but guinea pigs are small. Sam: I see. By the way, what is your brother’s favorite animal? Guinea pigs, too? Nina: No, Billy’s favorite animal is hippos. Sam: Then, you have three guinea pigs and a hippo at home. Nina: No! Hippos are so big.  by the way 順便一提 ；then 那麼
【題組】34. What is Nina’s favorite animal?
(A) Koalas.
(B) Pigs.
(C) Hippos.
(D) Guinea pigs.