In American, a friend inviting you to a restaurant doesn't mean that he or she will pay for the meal...
2023-01-31 01:21:11 139次 2014年江苏省苏州市区九年级教学质量调研测试（一）英语卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
In American, a friend inviting you to a restaurant doesn't mean that he or she will pay for the meal ______ you are told ahead.
A. until B. unless C. although D. if
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