﹣﹣﹣Look!The man at the gate _____ be our headmaster.He is always standing there every morning.
﹣﹣﹣No,it_______ be him.He is holding a meeting in the office now.( )
A.must; can't B.must; mustn't
C.can't; can't D.can't; mustn't
﹣﹣﹣Look!The man at the gate _____ be our headmaster.He is always standing there every morning.
﹣﹣﹣No,it_______ be him.He is holding a meeting in the office now.( )
A.must; can't B.must; mustn't
C.can't; can't D.can't; mustn't
A.