2. Colin has been going out with Tracy for about a year. Colin has gone out with Trace for dinner.
3 Tracy has been playing the piano in public since she was six.
Tracy has played the piano in public many times.
4 Stephen has been acting in a music video all day. Stephen has acted in three music video. 
5 David has been saving up his money. David has saved up almost 3,000 euro. 
7
2 He hase been playing games for ages.
3 He has been lifting weights for two hours.
4 She has been teaching Colin to drive since two o'clock.
5 He hasn'tbeen eating recently.
6 I have been listening to this song all day long.