—Listen！Helen is singing in the next room.—It _____be Helen .She has gone to Beijing.
#75780
A
should
B
mustn’t
C
may
D
can’t
推荐题目
Today is Wednesday. He _______be at home. He ______ be at school.
#77314
A
can’t, can
B
can’t, must
C
mustn’t, must
D
mustn’t, can
—Is it necessary to look up every new word when I come across it in reading?—No. You ________， because you are likely to guess the meaning from the context.
#62150
A
can't
B
mustn't
C
don't have to
D
ought not to
—You must have met him the other day. —Oh, no, I ________.
#62226
A
hadn't
B
mustn't
C
haven't
D
didn't
---Look at that girl! Is that Susan?---No , it _______ be her. She has gone back to her hometown.
#74215
A
mustn’t
B
can’t
C
must
D
might