—Hurry up, Mum. The lights are turned on. Dad has been back.
—It _________ be him. He has gone to Shanghai.
A.must | B.can’t | C.mustn’t | D.may |
—Hurry up, Mum. The lights are turned on. Dad has been back.
—It _________ be him. He has gone to Shanghai.
A.must | B.can’t | C.mustn’t | D.may |