题目内容
----You seem to have known Dr Smith for a long time.
---- That’s true. ______ he joined our club six years ago.
A. Since B. Until C. When D. Before
【答案】
A
【解析】略
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题目内容
----You seem to have known Dr Smith for a long time.
---- That’s true. ______ he joined our club six years ago.
A. Since B. Until C. When D. Before
A
【解析】略