根据短文内容,填写合适的单词或用所给单词的正确形式填空,使短文意思完整。
Last month, our school held an English speech competition. I 1. (decide) to join it at once—it was a great chance to challenge 2. (I) and show my 3. (able) to speak in public. I made up my mind to stand out by 4. (practice) every spare minute after class.
The competition didn't have a specific topic. My teacher advised me to share my experience of improving English. I spent three evenings 5. (prepare) the speech and practiced it carefully every night. My deskmate helped me a lot with my 6. (pronounce). On the day of the competition, I felt nervous 7. (stand) on the stage. However, seeing the encouraging looks from my classmates and teachers, I calmed down. I spoke clearly and poured my true feelings. After the speech, the audience clapped 8. (warm).
Finally, I won the second prize. This activity taught me that if you put your heart into something, you'll gain rewards. It made me 9. (strong) and more confident. These precious (珍贵的) moments at school are always kept 10. my heart.

1. decided 2. myself 3. ability 4. practicing 5. preparing 6. pronunciation 7. to stand 8. warmly 9. stronger 10. in

1. 句中时间状语Last month表示动作发生在过去，谓语动词decide要使用一般过去式decided。
2. 此处表达“挑战自我”，动词challenge后要接I对应的反身代词myself作宾语。
3. 形容词性物主代词my后需要接名词，able的名词形式是ability，意为“能力”。
4. 介词by后要接动名词形式，practice的动名词为practicing。
5. 此处符合固定搭配spend time (in) doing sth.（花费时间做某事），所以prepare变为动名词preparing。
6. 形容词性物主代词my后需要接名词，pronounce的名词形式是pronunciation，意为“发音”。
7. 此处符合固定结构feel nervous to do sth.（做某事感到紧张），填不定式to stand。
8. 此处需要副词修饰动词clapped，形容词warm的副词形式是warmly。
9. 空后and连接并列的比较级more confident，所以strong也要变为比较级stronger，表达“更强大也更自信”。
10. 固定搭配keep in my heart意为“留在我的心里”，介词填in。