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1. protect (名詞形式)

2. danger (形容詞形式)

12. keep (v.)→(n.) 飼養員；保管人

13. wake (v.)→(adj.) 醒著

2. The light travels than the sound.

   A. much times fast   B. much times faster

   C. many times fast   D. many times faster

5. 走路時撞著別人要說“對不起”。

You should say sorry if you others.

1. We should pay attention to animal (protect) .

1. The w is the largest animal in the sea.

5. Stop (pollute) rivers and lakes,or we won’t have water to drink one day.

1. Does your father finish the book?

   A. write   B. to write

   C. writing   D. to writing