1 . The children were all ________(cheer) when they saw the kangaroos jumping here and there at the wildlife base. （所给词的适当形式填空）

2 . Interestingly, the _________(cheerful) the music was, the faster their heart rates were. (所给词的适当形式填空)

3 . This restaurant has a ________(cheer) atmosphere. (所给词的适当形式填空)

4 . The captain’s ________ ________(欢快的笑)dispelled our fears. (根据汉语提示完成句子)

5 . Whether sick or fine, she is always ________(cheer). (所给词的适当形式填空)

6 . This attractive tour takes you to some of San Francisco’s most________(cheer) holiday scenes. （所给词的适当形式填空）

7 . Interestingly, ________ ________ ________ ________ ________ (音乐越欢快)was, the faster their heart rates (心率)were. (根据汉语提示完成句子)

8 . Be positive and ________(cheer), for your mental health is equal to your physical health. (所给词的适当形式填空)

9 . Jack has delivered _________(cheer) speech which has made people change their minds. (所给词的适当形式填空)