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请根据句意、首字母和汉语提示写出所缺单词。
1. It is c_________ of you to kill the dog. We should be kind to animals.
2. His father is an electrical e________ in the big company and his family are proud of him.
3. The detective thought the young man was killed by one of his e____________.
4. Don't walk through the forest alone. There is a r________ of getting lost.
