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Mr. Black is rich, ________ he is not happy.
#55494
A
and
B
or
C
but
D
不填
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Why was the house on fire? _______ lightning hit it.
#57989
A
Because
B
Since　
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As
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Because of
Don’t forget to wash your hands _________ you have meals.
#58357
A
before
B
until
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though
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unless
         . ?  -He is tall and of medium build.
#55338
A
What does he like
B
What does he do
C
What's the matter with him
D
What does he look like
-What do you think of these flowers？-They are           beautiful          I love them very much.　　
#56340
A
such;that
B
too;to
C
so; that
D
enough; for
—_______he is very old, he works very hard. — Wow, great. I should learn from him.
#56197
A
Although
B
However
C
Because
D
So