Use the correction symbol to correct the following sentences:

1. After the old director's repeated explanations, his anger gradually subsided. Finally, he forced a smile on his face. 2. It was understood that some party organizations still did not dare to recruit party members who performed well but came from poor families, afraid that people would say that the class line was unclear. 3. Why hadn't the relevant departments paid any attention to this waste of talent? 4. Three small square tables were placed together to serve as conference tables for receiving guests and meetings. 5. The coal reserves in Shanxi Province were one of the richest areas in China. 6. Based on a large number of statistics, there was no doubt that smoking caused cancer. 7. This experience was worthy of the attention of cultural and educational workers, especially primary and secondary school teachers. 8. Before and after the Qingming Festival. The XX troop sent more than 800 people to participate in the suburban tree-planting labor. 9. There are people in the city who use unscrupulous means to counterfeit goods. Such illegal acts that cheat customers of their money should be severely cracked down. 10. In the past, we criticized some of his views on literary and artistic creation without any analysis. Now, it seemed that the criticism at that time was biased and cautious. 11. He was only concerned about the child's studies. As for his moral character, he did not think much of it. 12. Everyone was furious that the forest rangers had exposed the smuggling of timber by the Forest Bureau. 13. The author of this book hopes to use this book to help readers learn English sentence patterns. 14. You have to rely on the masses for everything. Otherwise, you can't do anything by yourself. 15. We should study hard. Otherwise, if we don't study, it will be very difficult to train ourselves into useful talents for the construction of the motherland. 16. Without exception, both the officials and the masses must abide by the legal system. 17. Despite the extremely unfavorable weather and geographical conditions, the mountaineers still overcame the difficulties and climbed to the top. 18. No matter how many setbacks he had encountered in the past few years, he was not discouraged at all. 19. Not only did the Chinese people recognize the nature of social imperialism, but the people of other countries also gradually saw the true face of the capitalist empire from their own experiences. 20. Some inflammation could be treated with Western medicine and Chinese medicine. Not only was Chinese medicine comparable to ordinary antibiotics, but it also had fewer side effects and lower costs. 21. Sleep three taboos: one taboo before going to bed can not be angry, two taboo before going to bed can not be full, three taboo lying place can not be when the wind. 22. He told me that in recent years, she had almost never forgotten to collect and organize folk tales and songs. 23. In order to prevent such accidents from happening again, we have strengthened the education and management of traffic safety. 24. Maintaining a simple and hard life style was a major issue that concerned whether the vast number of cadres could inherit and carry forward the revolutionary tradition. 25. Because the English Radio Lecture can give me a lot of help, I think the combination of lectures and practice is its outstanding advantage. 26. This workshop also restored the establishment of the patrol inspection system, which regularly went to each team to check the implementation of the system. 27. Many of those who had outstanding achievements in scientific research had succeeded through tenacious and hard work under very difficult conditions. 28. The document gave detailed provisions and profound explanations on some problems in the economic field from the theoretical and policy aspects. 29. He told the story of an underage worker's daughter who had gone astray. I want an accurate answer