Explain the meaning of the idioms: turn a blind eye, rub someone the wrong way, strike while the iron is hot, set himself up.

Here are the answers to the questions: 12. The manager decided to turn a blind eye to the minor mistake. This means the manager ____. To "turn a blind eye" means to intentionally ignore something that one should notice or deal with. The correct option is C. C) pretend not to notice* 13. When the new student confidently corrected the teacher in class, he certainly rubbed some people the wrong way. This means the student ____. To "rub someone the wrong way" means to annoy or irritate them, often unintentionally. The correct option is A. A) made others uncomfortable or annoyed* 14. To succeed in this endeavour, you must strike while the iron is hot. This means you must ____. To "strike while the iron is hot" means to take advantage of an opportunity when the conditions are most favorable. The correct option is C. C) act without delay* 15. My boy is very ambitious; he is setting himself up as a doctor. This means he ____. To "set oneself up as" a professional means to establish oneself in that profession, often by starting a practice or making preparations to do so. Given the options and the context of ambition, starting a clinic is a significant step in establishing oneself. The correct option is C. C) has already started his own clinic* 16. It is difficult, but good to pocket an insult. This means ____. To "pocket an insult" means to accept an insult without reacting or showing that one is offended; to ignore it. The correct option is B. B) It pays to take no notice of an insult* 17. The principal wrote the instructions in black and white. This means that the instructions were ____. "In black and white" means in writing, and therefore clear, explicit, and undeniable. The correct option is C. C) clear* 18. I hadn't quite finished talking when the girl snapped my nose off. This means the girl ____. To "snap someone's nose off" means to speak sharply or angrily to someone, often without good reason, implying rudeness and interruption. The correct option is B. B) rudely interrupted* 19. Mr. Amoasi has done a lot for our company; we must, therefore give him a run for his money. This means that we must ____. The idiom "give someone a run for their money" typically means to provide strong competition. However, in the context of "he has done a lot for our company," the sentence implies a reward or recognition for his efforts. Among the given options, "give him some rewards for his efforts" is the most logical consequence of his contributions, suggesting the idiom might be used in a non-standard way to mean "give him what he deserves." The correct option is D. D) give him some rewards for his efforts* 20. She flew into a passion when he refused her request. This means that she was ____. *