Scientists are convinced ______ the positive effect of laughter ______ physical and mental health.
#26213
A
of；at
B
by；in
C
of；on
D
on；at
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Vitamin D helps our bodies make a special chemical,and this special chemical, ____ , affects our brains,making us feel happy.
#28171
A
in turn
B
in particular
C
in advance
D
in short
.It’s far away from here and it’s certainly not _____ walking distance.
#27821
A
within
B
at
C
around
D
On
–The love story between Mary and Peter went public.. --Well, that is why Mary’s parents were so awkward ___ the news. She is still a child..
#27113
A
at
B
with
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for
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against
—Have you heard that Jay Chou is to perform in the Capital Stadium next month? —Of course. All his fans are _______ at the exciting news.
#27669
A
green with envy
B
over the moon
C
feeling blue
D
hot under the collar