（题文）Keys _______ used for ______ the doors. A. is, opening B. is, opened C. are, opening D. are open...
2022-10-14 08:19:08 164次 人教新目标九上英语试卷 Unit5 What are the shirts made of 单元测试 单选题 反馈错误 加入收藏 正确率 : 100%
题目内容：
（题文）Keys _______ used for ______ the doors.
A. is, opening B. is, opened
C. are, opening D. are opened
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