填空。 Do you have a healthy eating habit? As we know, a healthy eating habit is good 1 health. Of all the things we eat and drink, 2__ is the most important. Not _  3 people know this, but it is quite true (真实的). Our bodies can go 4__ food for a long time. 5__ for two or three days without water people may die. Many people don't know 6 _ water our bodies need to work well. And they don't drink 7__ water, especially(尤其) in hot weather. Most people drink only when they 8__ drink. But in fact they often 9__ more water, especially after they have sports. Do you know 65% to 75% of a man's 10__ is water? If we don't have enough water, we feel tired and may become ill. (     )1. A. for (     )2. A. fruit (     )3. A. a lot (     )4. A. for (     )5. A. And (     )6. A. how much (     )7. A. any (     )8. A. try to (     )9. A. must (     )10. A. head B. of B. vegetables B. many B. with B. Then B. how many B. some B. want to B. can B. arms C. in C. water C. little C. without C. So C. how C. a little C. in need C. need C. heart D. by D. food D. few D. through D. But D. why D. enough D. like D. needn't D. body