1. 根据语境，用方框中所给短语的适当形式填空。（每个短语仅使用一次）

come into being; according to; so that; do harm to; be employed in; long before; a number of; come after; for sure; die out

1. （1） Just as the light will the darkness, the end of the hard way is sure to be happy forever.
3. （2） I'm afraid you must get out of the habit, for it'll your health.
5. （3） Some reports said he had left the camp only a couple of hours earlier, but we never knew .
7. （4） The company has a free long-distance telephone number buyers can call with any questions about what they have bought.
9. （5） The examination was coming and the school students preparing their lessons.
11. （6） When the expression first , people refused to use it but gradually they began to accept it.
13. （7） Don't be so upset. It won't be your children can return to school again.
15. （8） the weather forecast, there will be a heavy rain tomorrow morning.
17. （9） In recent years, wild animals have been found in the forest.
19. （10） If too many of these rare animals are killed, they will .