用所给词的适当形式填空。
1. —How often _________ he _________?
—He ________ twice a week. (exercise)
2. Maria ________ (hard) ever eats junk food.
She _________ (have) a _________ (health) lifestyle.
3. My mother goes to the shop _________ (one) a week.
She plays sports _________ (two) a day.
She goes to the movies three __________ (time) a month.
4. Tim likes doing some __________ (surf).
He is a very good _________ (surf).
5. _________ (do) more exercise can help keep in good _________ (health).
It _________ (mean) it can help you stay __________ (health).
6. There are a few __________ (different) between __________ (they).
7. They are __________ (difference) from each other.