2. you have done a lot of things
3. we have had a lot of fun
4. they have traveled in Asia 
5. he has surfed in Hawai'i
6.I haven't been to Paris
7. you haven't gone sailing
8. we haven't saved enought money
9. they haven't been too shy
10. she hasn't tried surfing before
11. I have always wanted to studyacting
12. she has seen the new spider-man movie
13.we have gone surfing
14. she never tried scuba diving before
15. they have gone windsurfing many times