用所给词的适当形式填空。
1. Many teenagers have _____ (hobby).
2. Our son needs to be _____ (real).
3. He wants to be a _____ (profession) athlete.
4. All parents worry about their _____ (child) success.
5. I'm serious about _____ (run).
6. I should be allowed to make a _____ (decide) for myself.
7. _____ (be) a professional runner is the only thing I have ever wanted to do.
8. My parents have _____ (teach) me the _____ (important) of working hard.
1. hobbies 2. realistic 3. professional 4. children's
5. running 6. decision 7. Being 8. taught, importance