单选题 6.  Bob doesn't look his age. I think he's somewhere ______.
【正确答案】 D
【答案解析】[考点] 考查固定短语。
句意:鲍勃看起来不像他那个年纪的样子。我觉得他已经四十多岁了。in one's forties意为“四十多岁”,故选D。