Question

----Look at the boy running on the playground. Is it David?
---- It ______ be him. I saw him go to the teachers’ office just now.

A．mustn’t

B．can’t

C．may not

D．needn’t

Answer 1

B

試題分析：句意：——看正在操場上跑的那個男孩，是大衛(wèi)嗎？——不可能是他。我剛才看見他去老師辦公室了。根據(jù)句意我剛才看見他去老師辦公室了，可知不可能是大衛(wèi)，故選B。