17.What a pity you can't take part in our tour.
I wish________________________________
18.The air isn't pure,so were aren't healthy.
If______________________________--
19.We spoke to the man.He was very humorous.(who)
The man_________________________________________
20.His parents are both retired.They now live in Japan.
His parents____________________________
21.They asked me some different questions at the interview.
I___________________________
17. I wish you could take part in our tour.
18. If the air were pure , we would be healthy.
19. The man who we spoke to was very humorous.
20. His parents who are both retired now live in Japan
21. I were asked some different question at the interview