选词填空。从方框中选择合适的单词填入下列句子中。 habit, hardly, unhealthy, same, eat, exercise , surf, try, never, different, difference, keep, program 1. We should _____ every day. It's good to us. 2. here are some _____ between American English and British English. 3. _____ healthy food is good for you. 4. My pen is red, your pen is green. Mine is _____ from yours. 5. His favorite_____ is Animal World. 6. We should do some sports and _____ in good health. 7. Tom's mother is angry with him because he always _____ the Internet. 8. I have a healthy _____ . I eat a lot of vegetables and drink milk every day. 9. He is kind of _____ because he often eats junk food. 10. He is an honest boy, he_____ cheat his parents.