. (2010·江西名校模拟) —I’ve heard they went skiing in the mountains last winter.                           —It ______ true because there was so little snow there then. 
#63673
A
may not be
B
won’t be
C
couldn’t be
D
mustn’t be
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-Must I make the writing plan now? - No, you______. You______ finish it tomorrow.
#74957
A
needn’t, must 
B
don’t have to, may
C
mustn’t, may
D
mustn’t, must
 I know you have eaten all sorts of junk food your mother and I probably _____ you have.
#62716
A
shouldn’t let
B
can’t let
C
couldn’t have let
D
shouldn’t have let