Scientists are convinced _____the positive effect of laughter _____physical and mental health．
#26778
A
of ;at
B
by; in
C
of ; on
D
on ;at
推荐题目
The woman sold the eggs ________ seven dollars and they were sold ________ half price.
#28557
A
with, at
B
for, at
C
at, in
D
by, on
I think all the workers, ________ the leader _____ playing the most important role.
#26471
A
rather than ; are
B
rather ; are
C
more than ; is
D
less than ; is
The girl ____ red was coming up to the gentleman ___ long hair.
#28780
A
in….in
B
with…with
C
in..with
D
with…of
The new railway winds its way to Hongkong, _____ mountains _____ tunnels and _____ rivers.
#27418
A
across; over; through
B
over; across; through
C
over; through; across
D
through; over; across