Bài tập viết lại câu thì hiện tại hoàn thành và quá khứ đơn 70. I haven't been able to see them for over a year. It is ______________________________________________________ 71. It stared to rain at 2 o'clock. It has _________________________________________________ 72. I have never been to the ballet before. It is __________________________________________________ 73. John and Mary moved to Edinburgh twenty years ago. It is ___________________________________________________ 74. The police started looking for him two months ago. For two months now the _________________________________ 75. I have never seen a dirtier-looking dog. This is ____________________________________________ 76. Mary rang hours and hours ago. It it hours _______________________________________________ 77. It is ages since Alan visited his parents. Alan ______________________________________________________ 78. John has not had his hair cut for over six months. It is ______________________________________________________ 79. I has never seen such a beautiful building. It's the most _________________________________________________ 80. I have never read such a romantic story. This is the most _______________________________________________ 81. They had never had such a cold winter. It was the _____________________