Jack, you ... put the fish into the fridge before it....
1) had to, will spoil;
2) would rather, spoils;
3) had better, spoils;
4) may, will spoil.

Заранее спасибо*** 

Jack, you ... put the fish into the fridge before it....1) had to, will spoil;

ответ 1)

would rather, spoils 

ответ 2)