Scientists are convinced ________the positive effect of laughter________ physical and mental health.
#26429
A
of; at
B
of; on
C
by; in
D
on; at
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There was a murder in one of the poorest suburbs in the city the other day. Now the police are turning the whole house upside down __________ clues.
#27343
A
in want of
B
in search of
C
in favor of
D
in need of
These toys are not suitable for children four years old, who are too young.
#27360
A
outside
B
beyond
C
under
D
within
_________ production up by 60 % , the company has had another excellent year.
#25480
A
As
B
For
C
With
D
Through
He stood last but one among the twenty interviewees, _________, he failed the interview.
#27802
A
in other words
B
in this way
C
in general
D
in detail