3. The project received unanimous approval of the committee. (FAVOUR)

→ In this sentence, "favour" is used as a noun to refer to the approval or support given by the committee to the project.

4. The personnel officer promised him that she wouldn’t tell anyone that he had been in the prison. (WORD)

→ Here, "word" is used as a noun to refer to the promise or assurance given by the personnel officer.

5. Nobody could possibly believe the story he told us. (BEYOND)

→ In this sentence, "beyond" is used as a preposition to indicate that the story is so incredible or unbelievable that it is beyond belief.

7. I enjoy being the boss of a small company. (FISH)

→ This sentence is grammatically incorrect. The word "fish" does not have a clear meaning or context in this sentence.

8. The success of our local theater has made our city famous. (MAP)

→ In this sentence, "map" is used as a noun to refer to the representation or symbol of the city's fame or recognition.

10. The bank robbers escaped in a stolen car. (GETAWAY)

→ Here, "getaway" is used as a noun to refer to the act of escaping or fleeing, especially in a stolen car.

11. As people use a lot of wood-pulp, many trees are cut down.

→ The more wood-pulp people use, the more trees are cut down.

13. These young men became doctors after six years training.

→ After these young men trained for six years, they became doctors.

14. People believe that the Chinese invented paper in 105 A.D.

→ Paper was invented by the Chinese in 105 A.D.

16. That was a silly thing to say!

→ What a silly thing to say!

18. It takes six hours to drive from here to London.

→ It is a six-hour drive from here to London.

21. Most stores will accept a credit card instead of cash. (ALTERNATIVE)

→ In this sentence, "alternative" is used as an adjective to describe the credit card as an alternative or substitute for cash.

27. This train should have left 30 minutes ago. (MEANT)

→ In this sentence, "meant" is used as a verb to indicate that the train was supposed to leave 30 minutes ago.

28. The president arranged for me to use his chauffeur-driven car whenever I liked. (DISPOSAL)

→ Here, "disposal" is used as a noun to refer to the arrangement or provision of the chauffeur-driven car for my use.

29. The painting is worth $25,000. (VALUED)

→ In this sentence, "valued" is used as a verb to indicate that the painting has been assessed or appraised at $25,000.

30. This passport can be used in most countries.

→ This passport is valid or acceptable in most countries.

32. That hotel is a bit too expensive for us, I am afraid. (REACH)

→ In this sentence, "reach" is used as a verb to indicate that the hotel is beyond our financial means or resources.

33. Absolute secrecy was crucial to the success of the mission.

→ Without absolute secrecy, the mission would not have been successful.

36. A waiter spilled soup over Lydia’s new dress last night.

→ Lydia's new dress was stained or splattered with soup last night.

37. It was the goalkeeper that saved the match for us.

→ Had it not been for the goalkeeper, the match would not have been saved or won for us.

38. Tim insisted on being told the complete story.

→ Nothing could persuade or convince Tim to accept a partial or incomplete story.

39. Jane’s husband will be returning from South America quite soon.

→ It won't be long before Jane's husband returns from South America.

40. The permit expires at the end of this month.

→ The permit is not valid or effective after the end of this month.

42. Alice and Charles did not decide to move to a bigger house until after the birth of their second child.

→ Only after the birth of their second child did Alice and Charles decide to move to a bigger house.

43. Martin may not be very well but she still manages to enjoy life.

→ Martin's poor health does not prevent her from enjoying life.

45. Under no circumstances should you phone the police.

→ The last thing you should do is phone the police.

46. We couldn’t find George anywhere.

→ George was nowhere to be found.

48. There are a lot of people depend on him.

→ He is dependent on or relies on a lot of people.

50. The teachers agreed to introduce the new methods. (AGREEMENT)

→ In this sentence, "agreement" is used as a noun to refer to the consensus or agreement among the teachers to introduce the new methods.