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A. preserved
B. deserved
C. observed
D. reserved
网友回答
A. preserved
B. deserved
C. observed
(答案→)D. reserved
解析：考查动词：A. preserved保留，B. deserved值得，C. observed观察D. reserved预定，句意是：对不起，这两个桌子已经被预定了。你可以订那边的桌子。选D。