38. easily
39. D learn
help O Vnt
40. A that
41. A when
42. A to
43. B - drinking
44. A - buy
45. C - enough experience
46. D He said he hadn't met Susan the week before.
47. C The computer is being used at the moment
48. B The girl who is standing in front of the bookstore is your fiancee
49. D Because smoking is an extremely harmful habit, you should give it up immediately
50. A If I had money, I would go on holiday