Every possible means_____ been tried，and we find only______ this means can we do it well．
#86084
A
have，in
B
have，by
C
has，in
D
has，by
推荐题目
The number of people invited_____40, but a number of them______absent for different reasons.
#86031
A
were; was
B
was; was
C
was; were
D
were; were
—What _______ the number of the students in your school?—About two thousand. A number of them _______ from the countryside.
#43432
A
is; ,are
B
is; is
C
are; is
D
are; are
Either you or one of your students _______ to attend the meeting that is due tomorrow.
#85671
A
are
B
is
C
have
D
be
The university estimates that living expenses for international students________around $8,450 a year，which________a burden for some of them. (2013·湖南，33)
#85564
A
are；is
B
are；are
C
is；are
D
is；is