22. He has reached a point where/ which he could no longer make any further progress, and he is well aware of that.

21. You'll find this map of great value / price in helping you to get round London.

20．If by any chance someone comes to see me, ask them to leave　a message/ letter.

19．Dr. Black comes from either Oxford or Cambridge, I can't remember where/ which.

18．If / Whether he accepts or refuses the present is none of your business.

17．The little girl, disappointed/ disappointing at the examination results, stood there without saying a word.

16. That /What he will be on time is certain.

15. It is generally considered unwise to give a child whichever/ whatever he or she wants．

14. Go and get your coat．It’s there/where you left it.

13. When / Where they are leaving for Paris has not been decided yet．