We __________ booked. Look, this restaurant is almost empty.
#87437
A
mustn’t have
B
can’t have
C
should have
D
needn’t have
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He insisted that he _______ nothing wrong and that he _______ now.
#87896
A
did, be freed
B
had done, would be freed
C
should do, should be freed
D
should do, was
-Why didn’t Susan come to see us yesterday as she promised?-______. 
#87312
A
She must be busy
B
She might have been free
C
She must have been busy
D
She can’t be free