Disappointed, I was about to leave ____ something occurred, which ____ my attention.A.while, paidB.and, gotC.before, drewD.when, attracted
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D解析试题分析：考查并列连词when的用法，常用于“...be about to do sth.when...”句型中，表示“正要……这时……”。attract/draw one's attention吸引某人的注意力；pay attention to注意……。句意：很失望，我刚要离开，这时发生了一件事，吸引了我的注意力。