题目内容：

根据句意和汉语提示写出单词，完成句子。

1.The players in the Chinese men's soccer team are paying more attention to their ___ training. (日常的)

2.These new types of energy cost very little and ___ little pollution. (产生)

3.Volunteers from different ___ feel like part of one big family. (背景)

4.Internet users now use the character "duang" to ___ any kind of special effect. (描述)

5.As we reached the top of the mountain, we felt a sense of ___. (成就)