单选题 He wouldn’t even think of wearing clothes; ______ they make him look so old!
【正确答案】 D
【答案解析】句意:他甚至都没想过要穿那些衣服,因为穿上那些衣服使他显得如此的年迈。此处需要一个连词,只有 D项合适。这里 that引导原因状语从句。