Respuesta :

1.  Been

2. Have always wanted ( Wanted is past tense )

3. Have never tried ( Tried is paste tense )

4. Did not finish ( Could be didn't finish )

5. Have always wanted ( wanted is paste tense )

6. Did not do ( Could be didn't do )

7. Have / heard ( Heard is past tense )

8.  Have / Been / Have not seen ( Could be haven't seen )