(2014·南昌第二中学高三检测)We must keep our room clean，for dirt and disease go________，you know.
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A
hand in hand
B
step by step
C
from time to time
D
one after another
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He is ____our teacher; he is also our best friend.
#26385
A
less than
B
rather than
C
more than
D
better than
Fred entered without knocking and, very out of breath, sank _______ a chair.
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A
on
B
off
C
into
D
to
I know you have much time. Please tell us about the news______.
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A
in detail
B
in brief
C
in short
D
in all
(2014·烟台市第二次诊断)Vitamin D helps our bodies make a special chemical，and this special chemical，________，affects our brains，making us feel happy.
#25148
A
in turn
B
in particular
C
in advance
D
in short