动词填空。
1. Your brother _____ (practice) dancing at the moment, isn't he?
2. My cousin _____ (not swim) so fast as I when we were young.
3. Everyone knows that it's much easier to say than _____. (do)
4. The day before yesterday, he made up his mind _____ (lose) weight.
5. The teacher said as much as he could _____ (help)Peter not to drop Chinese.
6. Be quiet! The Greens _____ (plan) their trip to the USA.
7. Look! The new pair of glasses your mother gave you _____ (match) your coat very well.
8. Do you have any time _____ (prepare) the dinner for us?
9. Each of us _____ (tell) you the truth when we arrive home.
10. Would you please make all the boys there _____ (not talk) in class?
缺失者，义齿的支点线形式为（）