Mr. Black has been teaching English in a middle school _____ he came to China. A．for ever B．ever sin...
2023-01-24 10:03:35 11次 2010年青海省高一上学期期中考试英语卷 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
Mr. Black has been teaching English in a
middle school _____ he came to China.
|
A．for ever
|
B．ever since
|
C．since then
|
D．long before
|
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