根据句意或首字母填词。 1. More exercise helps us to keep in good ________. 2. If you want to finish the work well, you must use ________people and ________ money (用更少的人力和财力). 3. We should obey school rules, so we must keep our classroom c________. 4. It's dangerous. You ________ (禁止) play in the street. 5. He is always ill, so he is an u________boy. 6. Does he have ________ healthy lifestyle? 7. Look at the two pictures, you can find this one is ________ that one, 8. M________ sometimes your parents can't understand you, but they love you.