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Question 20: The correct answer is A. worked very hard Explanation: The phrase "worked his fingers to the bone" means to work extremely hard. Question 21: The correct answer is B. rude Explanation: In this context, impolite means rude. Question 22: The correct answer is C. interesting Explanation: Fascinating means extremely interesting or captivating. Question 23: The correct answer is A. disclose Explanation: To reveal something means to disclose it. Question 24: The most suitable response is B. I couldn't agree with you. Explanation: Laura agrees with Susan's statement about poaching and expresses her strong agreement by saying she couldn't agree more. Question 25: The most suitable response is C. Thanks a lot. Explanation: Hoang responds to Huy's congratulations by thanking him for the good wishes.