Answers:
01. I have been studying English for three years.
02. We have been waiting for delivery since last Tuesday.
03. They arrived here ten days ago.
04. I met him two years ago.
05. I have been trying to get through on the phone for the past hour.
06. The machine broke down an hour ago.
07. I have been driving since1974.
08. The new art gallery has been open since October.
09. We had to buy a new washing machine a couple of days ago.
10. That politician has been talking for six hours.
11. I haven't had a cigarette since I gave up on my birthday last year.
12. I was waiting for only a few minutes.
13. He has been eating in that expensive restaurant ever since he got his new job.
14. I left the firm two years ago.
15. He has been working here since the beginning of the month.
