Every possible means         to save the future of the baseball player so far.
#85774
A
was tried
B
were tried
C
have been tried
D
has been tried
推荐题目
Tony and I      good friends.
#44226
A
am
B
is
C
are
D
be
The number of pandas(熊猫)        becoming          .
#44138
A
is more and more
B
are less and less
C
is smaller and smaller
D
are fewer and fewer