—Sorry indeed. I______ to your birthday party if …—Forget it. I know  you were out on business.
#87479
A
must come
B
would come
C
must have come
D
would have come
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Mr. Blake __________my letter, otherwise he would have replied by now.
#87901
A
will not have received
B
needn’t have received
C
shouldn’t have received
D
couldn’t have received