Milk will turn sour soon on hot days ______ it is stored in the refrigerator．
#30135
A
since
B
until
C
because
D
unless
推荐题目
—My son is addicted to computer games. He is hopeless, isn't he?—Yes, _____ he is determined to give up and start all over.
#31438
A
if
B
when
C
even if
D
unless
____ I say Clancy is a smart boy, he still needs to work hard to achieve his goal．
#32619
A
Then
B
When
C
While
D
As
Would you like a cup of coffee ______ shall we get down to business right away ?
#79774
A
and
B
then
C
or
D
otherwise