Our monitor, it clear to us that he didn’t want to waste time playing computer games, le

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A. made
(答案→)B. having made
C. make
D. Had made
解析：考查分词做状语。本题中的动词make与句子主语our monitor构成逻辑上的主动关系，故使用现在分词做状语。而且他说这样的话是在他离开网吧之前，是一个在谓语动词之前发生的事情，故使用完成式having done。故B正确。