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
推荐题目
. ______ this job doesn’t pay very much, but ______ I can’t get another one.
#27432
A
In the first place; in the second place
B
On one hand; on another hand
C
On the one hand; on the other hand
D
For one thing; for another
He started to work dilligently _____ he came up with the idea of hybrid rice for the first time in the 1960’s.
#26969
A
at once
B
the moment
C
for the moment
D
in no time
American English has changed ________ time．There are several reasons ________ this.
#26725
A
over; for
B
for; with
C
in; of
D
during; about
The thing I like ______ watching NBA games is that there’s a great team spirit.
#25752
A
with
B
over
C
beyond
D
about
There was an excited expression ______ his face when he heard the good news．
#25205
A
of
B
on
C
at
D
over