—Hurryup,Mum.Thelightsareturnedon.Dadhasbeenback.      ...

问题详情：

—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               

【回答】

B

知识点：情态动词

题型：选择题