-- Is Li Ming in the classroom?   

-- No, he _____ there. I saw him in the reading room just now.

A. can’t be          B. may not          C. mustn’t         D. needn’t

--Is Li Ming in the classroom?

--No, he _____ there. I saw him in the reading room just now.

A. can't be

B. mustn't be

C. needn't be

D. is

—Is that student Li Ming in the classroom?   

—No, he _____ there. I saw him in the reading room just now.

A．is             B．mustn’t be            C．needn’t be           D．can’t be      

--- Is Li Ming in the classroom? --- No, he　　　　 　there. I saw him in the reading room just now.　

A. can’t be　　 B. mustn’t be　　 C. needn’t be　　 D. is