单词拼写，根据句子意思，填入一个正确的单词。
1. What kind of s__________ do you want to become a inventor?
2. How you're going to i__________ yourself this year.
3. I w__________ if he will come here tomorrow.
4. The young r__________ out and jumped into the water to save the boy.
5. He is f__________ my broken pen.
