志愿者活动经历的叙述表达 — 英语词汇题
题目
根据句意及括号中的中文提示补全单词，完成志愿服务经历的叙述。Last month, I spent a Saturday at a community food bank. I checked each box and s________ (分类) the food before it was sent to local families. By the end of the day, I had learned how teamwork could make a real difference.