WeChat Pay makes our lives confident. ______ we want to pay for something, we just need to scan a QR...
2022-09-26 21:00:37 61次 河南省三门峡市2019届九年级下学期阶段考试英语试卷 单选题 反馈错误 加入收藏 正确率 : 100%
题目内容：
WeChat Pay makes our lives confident. ______ we want to pay for something, we just need to scan a QR code (扫描二维码).
A. When B. After C. Unless D. Until
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