By this time next year,they ______ for sixty years.
问题描述：
By this time next year,they ______ for sixty years.
A) will have been married
B) will have married
C) will be married
D) have been married
答
A
将来完成时我不知道是选A 还是选C用完成时，强调对现在的结果‘ 结婚60年了’