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Many students didn’t realize the importance of study _______ they left school.
#57914
A
when
B
until
C
after
D
unless
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__________he is ill, __________he goes to school.
#56079
A
Although, but
B
/, /
C
Although, /
D
But, although
A snake bit him ___________ he went to see a doctor at once.
#57760
A
if
B
where
C
because
D
so
— ______ are you going to Guangzhou?— I’m taking the plane. 
#55495
A
What
B
Why
C
When
D
How
I was late for class yesterday __________ there was something wrong with my bike．
#56675
A
when
B
that
C
because　　　　
D
until
He was _______ pain, __________ he didn’t cry.
#55874
A
in, but
B
with, and
C
at, or
D
in, and