——This wall of air is an effective answer to the problem and it ____ work.——But it is a question to put such a wall of air around the statue.
#89420
A
may
B
must
C
should
D
could
推荐题目
He didn’t take the airplane from Malaysia to Beijing, otherwise he _______ his life.
#86445
A
would lose
B
had lost
C
would have lost
D
will lose
How happy we _______, if you had come with us to the party. 
#89782
A
could be
B
may have been
C
would have been
D
were
All our teachers demand that we ___________.
#87507
A
worked hard
B
work hard
C
will work out
D
should be worked hard