、Tom is a top student in our class , How        it be that he was a failure in the last exam?
#62666
A
can
B
should
C
may
D
nust
推荐题目
---________ we clean the classroom at once? ---No, you________. You ________clean it after school
#76372
A
Must, needn’t, can
B
Need, mustn’t ,may
C
Must, mustn’t, can
D
Shall, can’t , may
-May we leave the classroom now? -No, you ______. You ______ to leave until the bell rings.
#78353
A
mustn’t, are allowed
B
don’t have to, are supposed
C
needn’t, aren’t allowed
D
can’t, aren’t supposed