用所给词的适当形式填空。

1. Where _______ (do) Mary go on vacation?

2. How often does Mary __________(exercise)?

3. Mr Li ________(run) two miles in the morning.

4. Tom probably___________(work) out twice a day.

5. Billy always ________(wear) a safety helmet(头盔).

6. T doctor asks me to eat ________(little) food.

7. Tom is __________(difference)from Jim.

8. He __________( practice) English every day.

9. Do you think milk is kind of ________(health) food?

10. He has a habit of _________(get)up early.