________ coincidence, John and I were born on the same day of the same year, and we have a lot in common.

 

By　

【解析】考查短語意義。句意：碰巧我和約翰同年同月同日生，而且我們有很多共同點(diǎn)。根據(jù)were born on the same day of the same year可知是“碰巧”。

 

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