Johnny, you _________play with the knife, you_________ hurt yourself. 
#76255
A
won’t; can’t
B
mustn’t; may
C
shouldn’t; must
D
can’t; shouldn’t
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— If you listen to me, you ______ take a good rest at once.— OK, I ______ do so.
#62849
A
should; must
B
shall; will
C
must; would
D
may; can
Mary _______ be in the hospital. I saw her play basketball a minute ago.
#62940
A
mustn’t
B
shouldn’t
C
can’t
D
may not
Mary ______ my letter; otherwise she would have replied before now. 
#63420
A
has received
B
ought to have received
C
couldn’t have received
D
shouldn’t have received