(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
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Don’t worry and I’ll get your car fixed ___ .
#26836
A
at no time
B
in no time
C
at a time
D
at all times
Those overseas students volunteer 10 hours each week in Paris ________ free food and accommodation.
#25239
A
in search of
B
in contact with
C
in case of
D
in exchange for
_____ she heard the news that she won a scholarship, she was very excited.
#27498
A
The moment
B
At the moment
C
For the moment
D
A moment