since/for引导的时间状语 — 英语词汇题
题目
用 since 或 for 填空，使句子语法正确：1. My cousin has had this storybook ______ two years ago, and she still reads it every night. 2. The students have kept the school library open ______ more than three months this term. 3. Grace has written book reviews ______ she joined the reading club last September.