– Must I clean up the classroom right now, Miss Green?-- No, you ______.
#75722
A
mustn’t
B
can’t
C
needn’t
D
may not
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 He _____ have gone to Shanghai, for I saw him a moment ago.
#62704
A
must
B
can’t
C
mustn’t
D
can
—Where _____ Mary have put the empty bottles? — She _____ them away. They must be somewhere. 
#63263
A
can; can’t have thrown
B
must; needn’t
C
must; must have thrown
D
can; mustn’t have thrown