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
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People try to avoid public transportation delays by using their own cars, and_____ this creates further problems.
#28718
A
in short
B
in case
C
in doubt
D
in turn
Everything was perfect for the picnic the weather．
#26463
A
in place of
B
as well as
C
except for
D
in case of
(2013·高考新课标全国卷Ⅰ)It was a real race________time to get the project done.Luckily，we made it.
#25412
A
over
B
by
C
for
D
against