从方框中选择适当的选项补全对话。
a.Yes, there are many.
b.Yes, they are.
c.I really enjoyed myself.
d.Does it eat meat?
e.I am riding the elephant.
Peter: Hi, Sally.Come and have a look at my photos.
Sally: Are these the photos you took in Africa, Peter?
Peter: Look, this is a wildebeest（牛羚）. It's an animal in Africa.
Sally:
Peter: No, it doesn't.It only eats grass.
Sally: Are there a lot of animals in Africa?
Peter:
Sally: Oh, this photo looks interesting.What are you doing there?
Peter:
Sally: Did you have a good time there?
Peter: Of course.
