用比较级比较测量结果 — 英语句型题
题目
根据中文提示，用单词的适当形式补全句子。Today, the students measure how long it takes to walk to school. It takes Amy 15 minutes. It takes Ben 18 minutes. It takes Lily 12 minutes. Amy's time is s______ than Ben's, and Lily's time is the s______ of the three.（用比较级/最高级形式填空）