—Must I return the book tomorrow? —No, y
问题:
—Must I return the book tomorrow?
—No, you ________.You can keep it for three days.
A.mustn't
B.needn't
C.can't
D.may not
—Must I return the book tomorrow?
—No, you ________.You can keep it for three days.
A.mustn't
B.needn't
C.can't
D.may not