Having completed twenty years of service , （ ）。

Having completed twenty years of service , （ ）。
A、Mr. White was presented a gold watch
B、a gold watch was presented to Mr. White was
C、Mr. White presented a gold watch
D、a gold watch was presented to Mr. White
【正确答案】：A
【题目解析】：having completed twenty years of service，现在分词短语做状语，可知complete和主句的主语之间是主谓关系，所以排除BD选项，根据句意，Mr. White被授予了一块金表，应用被动语态，所以应选择A选项。