I. Present perfect (continuous) tense and Past simple tense. (Hiện tại hoàn thành (tiếp diễn) và Quá khứ đơn) 1.Eight years ago, we started writing to each other. We have __________________________________________________________. 2.My father hasn’t smoked cigarettes for a month. It’s a _____________________________________________________________. 3.Mr. Brown bought this car five years ago. Mr. Brown has _____________________________________________________. 4.I haven’t enjoyed myself so much for years. It’s years __________________________________________________________. 5.It’s a long time since we last went to the cinema.  We haven’t ________________________________________________________. 6.He last had his eyes tested ten months ago. He hasn’t _________________________________________________________. 7.How long is it since he last wrote to you? When ____________________________________________________________? 8.She hasn’t had a swim since she graduated from university. She last __________________________________________________________. 9.Robert and Catherine have been married for ten years. It’s' ______________________________________________________________. 10.When did they start to learn Spanish? How long ________________________________________________________?