________ I walked into the classroom，the teacher had already started teaching. A.By the time B.As so...
2022-07-25 23:57:01 138次 人教新目标英语九年级全册Unit 12 Life is full of the unexpected 单元测试卷 单选题 反馈错误 加入收藏 正确率 : 100%
题目内容：
________ I walked into the classroom，the teacher had already started teaching.
A.By the time B.As soon as C.After D.Because
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