83. After David left him waiting for the third consecutive time, Kirk realized that the same behavior he had initially valued as spontaneous and carefree was, in fact, simply ______ .
A. capricious
B. incontrovertible
C. extraneous
D. captivating
E. inscrutable

84. The border between the two properties, never ______ by legal means, had long been the subject of ______ between the antagonistic neighbors.
A. determined, concord
B. undermined, hostility
C. verified, consonance
D. quantified, diversion
E. established, disputation

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