_____ you have worked out the first problem, you may go on to work on the second.
#31378
A
Even if
B
Unless
C
Now that
D
Though
推荐题目
_____ the English examination I would have gone to the concert last Sunday.
#80571
A
In spite of
B
But for
C
Because of
D
As for
(2010·北京，27)Children who are not active or ________ diet is high in fat will gain weight quickly.
#30485
A
what
B
whose
C
which
D
that
The new China was founded in 1949, ______ great changes have taken place.
#33502
A
since when
B
after which
C
in which
D
when
It was several minutes _______ we realized what was happening~our dog was trapped in a newly-dug tunnel.
#30391
A
since
B
before
C
until
D
while