________ every student aware of the importance of study, they would study efficiently.
#88046
A
Were
B
Should
C
May
D
Had
推荐题目
No matter how the enemy frightened him ,he ______say a word .
#89836
A
did not
B
could not
C
might not
D
would not
. He __________ full marks, but he was so careless as to make a spelling mistake.
#88166
A
must have gained
B
can have gained
C
could have gained
D
must gain
Please open the window, _____?
#90215
A
can’t you
B
aren’t you
C
do you
D
will you
John ___ be a basketball player.He’s much too short.
#89019
A
may
B
mustn’t
C
can't
D
should
 There was plenty of time . She ____ . 
#89753
A
needn''t hurry
B
mustn''t hurry
C
needn''t have hurried
D
mustn''t have hurried