Question

Answer 1

61.It is the first time I have been to the ballet

62.It is twenty years since John and Mary moved to Edinburgh

63.For two months now the police have been looking for him

64.This is the dirtiest-looking dog I have ever seen

65. It is hours and hours since Mary rang

66. Alan has not visited his parents for ages

67.It is over six months since John last had his hair cut

68.It's the most beautiful building I have ever seen

Answer 2

It is the first time I have ever been to the ballet
twenty years since John and Mary last moved to Edinburgh
police have been looking for him
the most the dirtiest-looking dog I've ever seen
It is hours and hours since Mary last rang 
has not visited his parents for ages
over six months since John last had his hair cut
beautiful building I have ever seen