He tried to invite some famous pop stars to sing in the concert ______, but failed.
#27151
A
with free
B
for freely
C
with freedom
D
for free
推荐题目
_____ three influenza type A virus subtypes（子类型） have been found in pigs．
#27191
A
By far
B
As far as
C
So far
D
Till far
Among customers there are different preferences __________ what is attractive．
#25471
A
in honor of
B
in place of
C
in need of
D
in terms of