28.A
29.D
30.A
31.C
32.D
ll
33. You had better not go sailing in this weather.
34. John has come to live in Paris for a long time.
35. Mary isn't used to traveling alone.
36. He said that that was the first time he had tasted such a good glass of wine.
37. Although I'm very fond of my bicycle,it is impossible to ride it in a big modern city.
38. If you had been there yesterday, you would have known about the story.
39. Some parents would rather the children didn't have to take so many exams.
40. It's time we left.