词形变换。 1. If you work hard, you'll___________(success) in the exams. 2. Thank you very much for giving us some___________(value) advice. 3. One of my__________(hobby) is to collect stamps. 4. You must give up__________(play) computer games, or you'll fail in the exam. 5. He often___________(quarrel) with his wife about housework. 6. When you have problems, you'd better write a letter to your best friend about how_________(deal) with these problems. 7. I read about one of his__________(article) on__________(teen) problems in the newspaper. 8. From his words, we draw the ________(conclude) that he was lying to us. 9. It's ________(polite) to laugh at the disabled persons. 10. Why not _______(send) an e-mail to her instead of ________(reply) to her letter?