根据下列句子及所给汉语注解，写出空缺处各单词的正确形式，每空只填一词。
小题1:The air in the country is much (新鲜) than that in the big city.
小题2:Instead of running away, the young man (跳) into the river and saved the child.
小题3:No matter what kind of difficulties you meet, you should never give up (容易地).
小题4:In the program Sing My Song, many great singers have (写) many original songs.
小题5:There are some (架子) in the room. They are low.
