You can't borrow books from the school library _______ you show your student card. A. so B. if C. un...
2022-11-05 08:33:57 47次 江苏省2017届九年级中考二模英语试卷 单选题 反馈错误 加入收藏 正确率 : 100%
题目内容：
You can't borrow books from the school library _______ you show your student card.
A. so B. if C. unless D. as
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