3. choose the correct present form:
1. what's that noise? – jason …(have) a birthday party.
a) have had b) is having c) has

2. more and more people … (go) to university these days.
a) are going b) go c) have gone

3. who …. (use) my mp3 player? - i have.
a) uses b) is using c) has used

4. david and mary …. (go) out together now for nearly five years.
a) have gone b) go c) have been going

5. kate … (not finish) painting the flowers yet.
a) has not finished b) doesn't finish c) isn't finishing

6. den … (look) for his pen-knife at the moment.
a) has looked b) is looking c) looks

7. nick … (play) a computer game for two hours and he is still playing.
a) plays b) is playing c) has been playing

8. are you going to the concert on saturday night? - yes. actually, (already/buy) the tickets.
a) have already bought b) buy c) have been already buying
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