最佳答案:

　　1、shorter

　　2、thinner

　　3、younger

最佳答案:

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最佳答案:

　　1、About 800 kinds.

　　2、They eat meat，grass，vegetables or fruits

最佳答案:

　　1、He is 86 kilograms.

　　2、He is 1.9 metres.

　　3、Mr Zebra.

　　4、Mr Giraffe.

　　5、Mr Hippo. Because he is big and strong.

最佳答案:

　　A：

　　1、He's 1.8 metres.

　　2、She's 43 years old.

　　3、She is 30 kilograms.

　　4、Alice

　　5、Alice's father.

　　B：

　　例: Her father is 45 years old. Her father is older than her mother. Alice is 13 years old. She is older than her brother. Her brother is 20 kilograms. He is thinner than Alice. Alice's father is the tallest in her family.Alice's brother is the shortest in her family.Alice's father is the oldest in her family. Her brother is the youngest in her family.