He won several prizes, ________ he was only 6 years old. A.before B.although C.since D.until
2022-09-20 19:57:48 51次 牛津上海版英语九年级(9A) Unit 2 单元测试（含听力） 单选题 反馈错误 加入收藏 正确率 : 100%
题目内容：
He won several prizes, ________ he was only 6 years old.
A.before B.although C.since D.until
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