1. (2019九下·温州竞赛) 用方框中所给单词的适当形式填空，每词限用一次。

high   win   coach   by   cheer

1. （1） When I'm not happy, my best friend always  me up.
3. （2） After several days' travelling, we think  of the beautiful city.
5. （3） As we all know, some of the inventions were invented  accident.
7. （4） On the way to success, many  encouraged the players to keep on trying.
9. （5） There are still ten minutes before the game ends. Which team do you think  at last?