Teachers _______ be sensitive to the development level of each student so as to help them better. 
#62795
A
need to
B
may
C
are able to
D
can
推荐题目
His failure suggested that he   the teacher’s suggestions.
#62975
A
can’t have followed
B
needn’t follow
C
mustn’t have followed
D
shouldn’t follow
Miss Cooper ________ be here. I saw her come in.
#76252
A
can
B
may
C
should
D
must