— Who’s singing in the next room? — It _
题型:选择题
问题:
— Who’s singing in the next room?
— It ______ be Mary. She ______ New York.
A.mustn’t, is in
B.must, has gone to
C.could, has been in
D.can’t, has gone to
— Who’s singing in the next room?
— It ______ be Mary. She ______ New York.
A.mustn’t, is in
B.must, has gone to
C.could, has been in
D.can’t, has gone to