Scientists are convinced_____the positive effect of laughter_____physical and mental health.     
#28733
A
of; at
B
by; in
C
of; on
D
on;at
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______ the number of cars, only _____small number of people have attended the meeting.
#25565
A
Judging from; a
B
Judged from; a
C
Judging from; the
D
Judged from; the
_____ learn more knowledge, the students stay at school on Sunday.
#26182
A
In order to
B
So as to
C
In order that
D
So that
He will go to school by bike ___ on foot.
#28055
A
instead
B
of
C
instead of
D
no