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
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His best－known painting that is ________ all praise will be on show in the National Gallery early next month.
#25326
A
without
B
within
C
over
D
beyond
The discovery of these tombs is _______ for scholars’ studying the history of the Tang Dynasty.
#27491
A
of very important
B
great importance
C
of great significance
D
great significant
It’s a mistake to think of Florida only ______ its tourist attractions.
#26774
A
in addition to
B
by way of
C
in terms of
D
by means of
It’s time you changed your attitude ___ your studies, for the time is running out.
#26375
A
with
B
towards
C
for
D
at