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You should keep working hard __you have passed the exam.
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A
if
B
because
C
even though
D
when
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In the street I met the professor_______gave us a talk last week.
#57736
A
what
B
which
C
／
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This desk is new ,         that one is old .
#57184
A
but
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and
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My brother has been teaching ________ he was 21 years old.
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Stop smoking, ________ your health will get worse soon.
#55430
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The art club is for members only. You can’t go in _________ you are a member.
#57977
A
unless
B
because
C
if
D
though