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）

in danger of; protect from; succeed in; without mercy; die out; in peace; in relief; burst into laughter; pay attention to; respond to

1. （1） When she was told her son would recover from the illness soon, she left the hospital .
3. （2） She did not our request for further information on Wednesday.
5. （3） How many times should I tell you that you need to your writing?
7. （4） Because of humans' destroying the forest, many species are .
9. （5） A greenhouse is a glass building in which you grow plants that need to bad weather.
11. （6） This kind of bird is rarely seen in the area because they are being hunted by people.
13. （7） But for the workers' help, we should not have this experiment.
15. （8） We hope the new century will be a century in which people of all nations live .
17. （9） Many schools were closing because the children were sent to bigger cities.
19. （10） Upon hearing the funny story, everybody .