—Who’sthatmanunderthetree?IsitMrBlack,ournewEnglishteac...

问题详情：

—Who’s that man under the tree? Is it Mr Black, our new English teacher?

—It_______ be. Mr Black has gone to Shanghai for a holiday.

   A. mustn’t                                   B. can’t                                    C. needn’t

【回答】

B

知识点：情态动词

题型：选择题