--- _________ David be the new chairperson of the Students’ Union? --- He ________ be, but I’m not sure.
#74581
A
Can; can’t
B
Can; may
C
May; must
D
May; mustn’t
推荐题目
We ________the difficulty together, but why didn’t you tell me?
#62629
A
should face
B
might face
C
could have faced
D
must have faced
It has been announced that all the students ____ put on masks before going to school in case they are infected with SARS virus.
#62892
A
shall
B
will
C
need
D
may
My sister met him at the Grand Theater yesterday afternoon, so he ________ your lecture.
#63289
A
couldn’t have attended
B
needn’t have attended
C
mustn’t have attended
D
shouldn’t have attended
If the green light doesn’t come on, you ______ go across the street.
#76761
A
must
B
needn’t
C
mustn’t
D
have to