1. The aria was _______ with the tempo changing continuously in a most unpredictable fashion.   capricious   cacophonous   abstemious   impecunious   antediluvian   Hint Hint       2. The educational system had _______ over a period of time when the authorities got preoccupied with petty politics and did not bother to update the curriculum.   relegated   ossified   underscored   adulterated   burnished   Hint       3. After having _______ arguments virtually every other day, the couple agreed that it was best for them to separate.   saturnine   assiduous   astringent   effulgent   acerbic   Hint       4. She was _______ liar who had mastered the art of making untrue statements in a manner they sounded _______.   a blatant..incongruous   a congenital..creditable   a mundane..credulous   an incorrigible..plausible   a convincing..illogical   Hint       5. Scientific investigations of fluid flow behavior around objects like high-speed aircrafts are complex; however, the systems are _______ when experiments are performed in scaled-down versions such as wind tunnels.   tractable   implacable   malleable   permeable   turbulent   Hint       6. It is economically beneficial to increase the capacity of an industrial plant when the revenue can be increased without a _______ increase in the cost of production.   compliant   commensurate   precarious   controlled   warranted   Hint       7. The students appreciated the professor's _______ style of preparing notes for the lectures because the effort in collecting vital information from various sources truly enhanced their learning.   eclectic   pedantic   esoteric   pedestrian   dogmatic   Hint