Present Simple/Past Simple/Future Simple/present Continuous/Present Perfect. Dear Ashton, I'm sorry i (not/write) to

Dear Ashton,I\'m sorry i haven\'t written to you for so long, but I have been very busy lately. All last month I had exams and had to study very hard. Anyway I have stopped styding now, and I am waiting for my exams results. As you see from my letter, my address has changed and I live in Leeds now. My family moved here three months ago. I hope when you come to Britain in the summer, you will visit me. I will be at home till the middle of August. Then I will go on holiday to Scotland. Hope to hear from you shortly. Love, Sarah.