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
推荐题目
In the dark street, there wasn’t a single person ___ she could turn for help.
#28799
A
that
B
who
C
from whom
D
to whom
News reports say peace talks between the two countries have broken down ______ no agreement reached.
#27445
A
with
B
as
C
because
D
like
When we ran to the top of the hill, we were _____ .
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A
out of fashion
B
out of work
C
out of the question
D
out of breath
It is illegal for a public official to ask people for gifts or money favors to them.
#27658
A
in preference to
B
in place of
C
in agreement with
D
in exchange for