1 freezes,turns

2 eat,will gain

3 wouldn't have taken, had known

4 was, would be able

5 had been

6 were, wouldn't do

7 had seen ,would have invited

8 will get, study

9 mix ,get

10 won't tell, don't promise

11 heats, boils

12 had played, would have won

13 knew

14 exercises, will lose

15 had seen