完形填空。 Fire can help people in many ways. But it can also be very harmful (有害的). Fire can keep your house 1 , give light and cook food. But fire can burn things, 2 . Big fire can burn trees, houses, animals or people. Nobody knows how people began to use fire. But there are 3 interesting old stories about how a man or woman started a fire. One is 4 a man. The man 5 a very long time ago. He went up to the sun and 6 fire down. Today people know how to make a fire with matches. Children sometimes 7 to play with them. But matches can be very dangerous. One match can burn a piece of paper, and 8 it could burn a house. A small fire can turn a big fire very quickly. So you 9 be careful with matches. Be careful with fire, and it will 10 you. But if you aren't careful with fire, and it may hurt you. (     )1. A. warm (     )2. A. also (     )3. A. many (     )4. A. over (     )5. A. worked (     )6. A. bring (     )7. A. enjoy (     )8. A. after (     )9. A. can (     )10. A. help B. warmer B. too B. much B. about B. studied B. take B. like B. late B. may B. do C. cool C. either C. little C. a little C. learned C. brought C. don't like C. yet C. will C. tell D. cooler D. neither D. no D. no D. lived D. took D. become D. then D. must D. hope