---I saw Mr. Smith at Xianyang Airport this morning.  ---You ____. He’s still on holiday in Hawaii.
#62523
A
can’t
B
couldn’t have
C
mustn’t have
D
needn’t
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He failed in the driving test again. He         .
#62842
A
must have disappointed
B
must have been disappointed
C
might be disappointed
D
couldn’t be disappointed