1. The old should be spoken to ______ (polite).
2. My family lives in the ______ (center) park of the city.
3. He is too ______ (care) to pass the final exam.
4. Poetry is a beautiful way to express ______ (think) and feelings.
5. Children's ______ (expect) ideas often surprise the adults.
6. Betty is often seen ______ (help) the old man with his housework.
7. He prefers ______ (take) part in the public activities rather than stay at home alone.
8. They ______ (agree) with each other, so they argued for a long time.
9. Animals are our friends, so ______ (protect) them is our duty.
10. You have ______ (award) a scholarship to study violin at our School of Music.