用括号中所给词的适当形式填空。 1. My grandparent __ (do) exercise every morning. 2. Brush your teeth __ (two) a day. 3. __ (health) eating habit is bad for you. 4. Can you tell me the __ (different) between'look for'and'find'? 5. My mother wants me __ (play) the piano every day ? 6. Good food and exercise help me __ (study)better. 7. Dwelling Narrowness ($amp; amp;$gt;)is an __ (interest) TV play. 8. Everyone in our class tries __ (get) good grades. 9. How often does she __ (go) to the movies with her parents? 10. —How many __ (hour) do you sleep every night? —Always nine hours.