英语 高三 填空题 较难

终身学习话题词汇 — 英语填空题

译林版·英语(高中) Unit 4 Never too old to learn AI 三重审校通过

题目
根据句意及首字母提示,用终身学习话题词汇补全句子:Grandpa is seventy, but he firmly believes that it is never too old to learn, so he keeps an o____ mind and often attends lectures at the community college.