问题详情：
根据句意，在答题卡对应题号的横线上，写出括号内所给单词的适当形式。
1. Teenagers are interested in stories of the ________________ (牛仔) in the western films.
2. We all hope the 31st Olympic Games will be _______________ (成功) held in Rio.
3. It is_______________ (愚蠢的) of you to sit there than to go outside to play games.
4. The film _ (以…为基础) on the novel Harry Potter is very wonderful.
【回答】
1. cowboys 2. successfully 3. sillier 4. based
知识点：单词拼写
题型：单词拼写
