16.save
17.stopped
18.would (you) do
19.didn't hurry
20.had tried
21.wouldn't run
22.will promise
23.had permitted
24.would spend
25.will accept
II.
1.Unless the flood had risen higher, the crops would not have been ruined.
2.Unless you had sneezed, he would not have known that we were there.
3.Unless she did her hair differently, she would not look quite nice.
4.Unless john had played for our football team, we would have lost the game.
5.Unless I won a big prize in lottery, I wouldn't give up my job.
6.Unless you are carefully, you will cut yourself with that knife.
7.Unless you like this one, I'll bring you another.
8.Unless I have a quiet room, I'll not be able to do any work.
9.Unless she hurries, she will be late.
10.Unless we had more rain, our croups wouldn't be better.