1) had, would go
2) had known, would have gone
3) had missed, would have been
4) knew, would help
5) had forgotten, wouldn't have reminded
6) had had, would have sent
7) knew, would phone
8) would have enjoyed, had been
9) would have been, had walked
10) was, would go
11) had been, would have eaten
12) had got, wouldn't have had
13) would have lost, had sold
14) were, could
15) had asked, would have told
16) had been, wouldn't have played
17) was, wouldn't have
18) hadn't contacted, wouldn't have caught
19) didn't feel, wouldn't smoke
20) had called, would have told
1) had, would go
2) had known, would have gone
3) had missed, would have been
4) knew, would help
5) had forgotten, wouldn't have reminded
6) had had, would have sent
7) knew, would phone
8) would have enjoyed, had been
9) would have been, had walked
10) was, would go
11) had been, would have eaten
12) had got, wouldn't have had
13) would have lost, had sold
14) were, could
15) had asked, would have told
16) had been, wouldn't have played
17) was, wouldn't have
18) hadn't contacted, wouldn't have caught
19) didn't feel, wouldn't smoke
20) had called, would have told