用所给词的适当形式填空。
1. They are __________ (sit) on the couch.
2. Everyone in the living room __________ (be) quiet.
3. When the baby grew into a man, he was a great __________ (teach).
4. I __________ (bring) a Christmas tree to school yesterday.
5. The green umbrella is __________ (my).
6. The star always __________ (go) on the top!
7. This snowball is __________ (small) than the first.
8. Look! She is __________ (skate) forwards.
9. Three wise __________ (man) saw the star.
10. She opens the gift __________(quick).