Поставьте правильную форму глагола в Present Perfect Simple или Present Perfect Continuous. - Hi, Mark! I (not/see) you

— Hi, Mark! I have not seen you for ages.— Hi. I have been working quite hard as usual. How about you?— Great. I have been looking around for a new flat, but I have not found one yet.— What’s wrong with your old one?— It’s OK. But I have just got a new job and it’s on the other side of town. By the way, have you finished that book I gave you last month?— I have not had time, I was very busy. I have started it but I’ve only got as far as the first chapter.— What have you been doing since I last saw you?— I have been preparing for exams, of course. I have taken maths. I’ve still got physics and chemistry to go.— How did the maths exam go?— I think I have passed it. We’ll see.