问题
完形填空
________ coincidence, John and I were born on the same day of the same year, and we have a lot in common.
答案
By
考查短语意义。句意:碰巧我和约翰同年同月同日生,而且我们有很多共同点。根据were born on the same day of the same year可知是“碰巧”。