All the athletes competed _____ each other for gold medals in the Olympic Games.
#26017
A
against
B
for
C
between
D
over
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Researches are convinced ______ the positive effect of laughter ______ physical and mental health.
#26134
A
of; at
B
by; in
C
of; on
D
at; on
(2013·江苏高考)I am always delighted when I receive an email from you.________ the party on July 1st I shall be pleased to attend.
#25317
A
On account of
B
In response to
C
In view of
D
With regard to