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
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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