1. TERRIFIC! 

11. I knew you could do it

2. Nothing can stop you now

12. Congratulation!

3. That's the way to do it

13. Not bad

4. SENSATIONAL

14. Keep working on it

5. You've got your brain in gear today

15. You're improving

6. That's better

16. Now you have it!

7. That was first class work

17. You are learning fast

8. EXCELLENT!!

18. Couldn't have done it better myself

9. That's quite an improvement

19.. Are you proud of yourself?

10. GREAT!

20. One more time and you'll have it