319. Eager to maintain the party's lighthearted atmosphere, the host skillfully averted between two of his guests with change of subject.
A. an impasse, an ineffectual
B. an agreement, a tactful
C. a friendship, an irritating
D. a quarrel, a diplomatic
E. a respite, a botched

320. Although normally cheerful and energetic, Nathan was noticeably ______ during the week preceding the announcement of the pending job transfers.
A. coherent
B. discreet
C. subdued
D. alert
E. methodical

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