—Someone is knocking at the door. Is it
题型:选择题
问题:
—Someone is knocking at the door. Is it Ann?
—It _____ be her. She is giving a performance at the theatre now.
A.may
B.must
C.can’t
D.mustn’t
—Someone is knocking at the door. Is it Ann?
—It _____ be her. She is giving a performance at the theatre now.
A.may
B.must
C.can’t
D.mustn’t