1. It was _________(安排)that they should leave the following spring.
2. Harry Potter lives in a _________(幻想) world, which is totally different from ours.
3. As beginner of a second language, you have many difficulties to _______(克服).
4. The villagers here _________(依赖) on wells for their water at present.
5. They found themselves _________(包围)by colorful rocks, fishes, seashells and plants.
6. When water __________(结冰), its density decreases.
7. Mixed -race m_________were forbidden by law.
8. The nutrients in whatever falls into the ocean will quickly become a______ to other living creatures.
9. There was little change in their d________lives.
10. Their ages r________from 25 to 50.