After much _______, the shop owner agreed to cut down the price by 15%.A.debatingB.talkingC.discussingD.bargaining
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D解析本题考查动词词义辨析。由后半句agreed to cut down the price by 15%可知，空白处应表达“讨价还价”之意。Bargain讨价还价；洽谈条件；debate辩论，讨论，争论；talk（说，谈话）和discuss(讨论)显然不符合题意。