Milk quickly goes bad in summer       it is in a fridge (冰箱). 
#55517
A
if
B
because
C
unless
D
When
推荐题目
 _______to ride a bike from your school to the park?
#56276
A
How long did you spend
B
How far did it take
C
How long did it take you
D
How far did you spend