1. was

2. have been 

3. are going to cycle

4. has never seen

5. didn't do

6. has never met

7. went - had

8. arrives

9. watches

10. have you ever met

11. has been teaching

12. visited

13. designed

14. is knocking

15. taught

16. watches

17. took

18. didn't have

1. was                             9. watches                                           17. has taken

2. are                              10. have you ever meet                       18.  did not have

3. will cycle                     11. have taught 

4. never sees                   12. visit

5. did not do                    13. designs

6. never meets                 14. knocks

7. went/had                      15. taught

8. arrive                            16. watches