--Listen! Tom is singing in the next roo
问题:
--Listen! Tom is singing in the next room.
--It _______ be Tom. He has gone to Shanghai.
A.may
B.must
C.mustn’t
D.can’t
--Listen! Tom is singing in the next room.
--It _______ be Tom. He has gone to Shanghai.
A.may
B.must
C.mustn’t
D.can’t