1 . How could anyone find pleasure in hunting and killing this beautiful __________________(生物)? （根据汉语意思填空）

2 . I missed the _______(stimulate)of working with others when I tried to do it alone.(所给词的适当形式填空)

3 . They help us to see that everything on earth is part of the ________(incredible)of life. (所给词的适当形式填空)

4 . Two ________ (half) make a whole. (所给词的适当形式填空)

5 . With the teacher’s________ (同意), the boy hurried out to the ground floor to pick up his book. (所给词的适当形式填空)

6 . African runners swept all the_________ （奖牌）in the distance events. （根据汉语提示单词拼写）

7 . Books and pens are important ________ (necessary). (所给词的适当形式填空)

8 . The company suffered a heavy_________（损失）as a result of the mistake. （根据汉语提示单词拼写）

9 . He used to play practical_________（玩笑）on all his friends and neighbors. （根据汉语提示单词拼写）

10 . Learning a musical_________ （乐器）introduces a child to an understanding of music. （根据汉语提示单词拼写）