_______ you work hard, you won’t solve this problem.
#32455
A
Even
B
As
C
Unless
D
Since
推荐题目
Tom was about to close the window ______ his attention was caught by a bird.
#31898
A
when
B
if
C
and
D
till
They hurried to the train station, it was too late. They had to wait another ten minutes.
#33436
A
but
B
so
C
and
D
or
---It has been ages ________ I last saw you. --- Yes. And it will be long ______ we meet again.
#34509
A
when; before
B
since; before
C
after; before
D
before; since
________ it is, the boy never seems to be able to finish it off.
#30273
A
However interesting a book
B
Whatever interesting a book
C
How interesting a book
D
What an interesting book
You have to wear a helmet and a life jacket for protection, just ____ you fall into the water.
#32160
A
for
B
because
C
so that
D
in case