用所给词的适当形式填空 1. The man's _________(foot) are very big. It's hard for him to buy shoes. 2. It's easy to stay ___________(health). 3. I had a lot of ___________(headache) these days, so I should stay at home. 4. It's important to have a __________(balance) diet. 5. You shouldn't eat ________(something) before you see the doctor. 6. Something is wrong with one of my _______(tooth). 7. The boy is doing math ________(exercise) now. 8. 'Children, don't talk in class! ', the teacher said ________(angry). 9. Jane speaks English well, so she is ________(activity) in English class. 10. New Year's Day is very important in some ______(west) countries.