In summer, food will go bad quickly ________ we put it into a fridge.( )
A. |
if |
B. |
unless |
C. |
as soon as |
D. |
while |
In summer, food will go bad quickly ________ we put it into a fridge.( )
A. |
if |
B. |
unless |
C. |
as soon as |
D. |
while |