二、听录音，补全句子。

1. Whose mouth is the smallest of all?

2. Let’s stand in a line.

3. Who is the tallest in our class?

4. Kelly is my favourite singer. She is the most beautiful.

5. I’m one year younger than Oscar.

6. An elephant is much heavier than a deer.

7. It’s true that the ruler is blue.

8. —Who is the fattest? —Of course, Eric is.