One of our rules is that every teacher      wear school uniform while attending the school flag-rising ceremony. 
#63193
A
might
B
shall
C
could
D
will
推荐题目
—Happy birthday!— Thank you! It’s the best present I_________ for.
#63166
A
should have wished
B
could have wished
C
may have wished
D
must have wished
– Must I stay here with you?-- No, you ______. You may go home, but you _____ go to the net bar(网吧).
#75906
A
mustn’t; needn’t
B
needn’t; mustn’t
C
must; need
D
need; must
---I was trying to carry out the plan, but I failed.---Well, you _____, for we were uncertain it would do ____.
#63211
A
needn’t do that, in fact
B
needn’t have done, in effect
C
needn’t have, in practice
D
needn’t, in time