题目内容：

根据汉语提示，填入下列单词的正确形式。

1.His book quickly became a standard ______________(参考) book.

2.Most of the suggestions were quickly  _______________(采纳) .

3.Life is hard at high __________(海拔) and the mountains make communications difficult.

4.It often gets angry and will _____________ (攻击) anyone who goes close to it.

5.But in the west, dragons had a different ______________ (声誉).

6.If you were born in the year of the dragon, you are intelligent, brave, and a __________(自然的，天生的) leader.

7.Li Xiaohe _____________(声称) to have seen a black creature moving quickly through the water.

8.The gorge ________(变狭窄) to 350 feet as the river rushes through the two-mile-high mountains.

9.He felt that it was his _________(使命，责任) in life to help others.