Choose the correct options

1. Mark and Sally [have been saving up|have saved up|save up] for two years to buy a bungalow.
2. Jeremy usually [is avoiding|avoids|has been avoiding] talking to me when he is concentrating on his work.
3. Sorry, I can't go to see Harry with you as I [have been doing|do|am doing] household chores right now.
4. Fred [has carried out|has been carrying out|is carrying out] four difficult tasks recently.
5. The dish you've just cooked [is tasting|tastes|has tasted] delicious.
6. I [am seeing|see|have seen] my friends at the station at 8 o'clock tomorrow.
7. What [is his sister looking like|has his sister been looking like|does his sister look like]?
8. Jeremy looks so tired. How long [has he run|has he been running|is he running]?
9. I [haven't been seeing|don't see|haven't seen] my colleagues yet.
10. How many books [have you been buying|have you bought|do you buy] yet?