1 been to a night club before
2 they have heard such a thing
3 someone challenged his authority
4 2 years since she left university
5 never known a more warm-hearted person than my mother
6 a years since I was able to see them
7 rained since 2 o'clock
8 the first time I have been to the ballet
9 20 years since John and Marry moved to Edinburgh
10 police has been looking for him
11 the dirtiest-looking dog I have seen
12 since Mary rang
54. I haven't been to a night club before.
55. This is the first time they have heard such a thing.
56. This is the first time someone has challenged his authority.
57. It is 2 years since she left university.
58. I have never known a more warm-hearted person than my mother.
59. It is over a year since I last saw them.
60. It has been raining since 2 o'clock.
61. It is the first time I've been to a ballet.
62. It is 20 years since John and Mary moved to Edinburgh.
63. For two months now the police has looked for him.
64. This is the most dirtier-looking dog I have ever seen.
65. It is hours since Mary rang.
