44. Would you mind if I borrowed your car tonight ?
45. It is too cold to bathe.
46. It is necessary to know English.
47. Don't forget to check your flight number.
48. Apples are not usually more expensive than oranges.
49. Though Belinda felt tired, she still went to the party.
50. If he worked hard, he could pass the exam.
51. Sally was given a bicycle for her birthday by her parents.
52. We spent two hours watering flowers.
53. Mark isn't old enough to see that horror film.