24d - 25b - 26d - 27c - 28b - 29d - 30a
Exercise 6
1a => were
2d = > to do
3b => rained (or 3a => if)
4a => I had known
5b => had known
6a => finishes
7b => confidently
8d => have been lost
9c => would have writen
10d => would have stopped
11a => you had sent
12d => were
13c => will be sacked
14d => would
15c => doesn't try