Scientists are convinced ______ the positive effect of laughter ______ physical and mental health.
#26213
A
of；at
B
by；in
C
of；on
D
on；at
推荐题目
(2013·潍坊市高三二模)Parents are advised to take pressure ________ their children and give them some encouragement before an exam.
#25311
A
off
B
over
C
from
D
to
Margaret liked all her classes, but she liked sewing class _____.
#29165
A
above all
B
in general
C
after all
D
in particular
When Mr. Smith took over the company, it was already heavily______ and had no money to pay the workers.
#25206
A
in danger
B
in relief
C
in debt
D
in return