It is so difficult a question_______ none of the kids could work it out.
#32787
A
as
B
that
C
which
D
X
推荐题目
Half an hour later, Lucy still couldn’t get a taxi _______ the bus had dropped her.
#29997
A
until
B
when
C
although
D
where
A lot of people don’t learn from their mistakes ______ they get hurt.
#31476
A
whether
B
when
C
if
D
unless
I had just gone to bed after a tiring day the phone rang loud enough to wake up the dead.
#33186
A
as
B
when
C
after
D
while
You can get the best result ______you carry out the experiment under the desired conditions.
#31006
A
what if
B
even if
C
only if
D
as if
How did you manage to get to school on time ______ you missed the school bus?
#79910
A
when
B
if
C
once
D
because