Scientists are convinced the positive effect of laughter_____physical and mental health.
#26000
A
of, at
B
by, in
C
of, on
D
on, at
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Bob: How long have you lived here? Sue: _________.
#27722
A
Since the beginning of the year.
B
In 1990
C
Not long ago
D
Only until the end of the year
—You know，Bob is a little slow ________understanding.—So I have to be patient________him.
#25163
A
in；with
B
on；with
C
in；to
D
at；for
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
----Would you like some more chicken?------No, thanks . I am ______ a diet and try to _____ weight.
#27666
A
on, lose
B
on, put on
C
in , have
D
in , lose