My aunt has sent a message to us_______ that she is coming back on May Day.
问题描述：
My aunt has sent a message to us_______ that she is coming back on May Day.
A.said B.to say C.saying D.say
答
C
如不明白请追问,如果满意请【采纳】
祝学习进步为什么B不行啊？saying（上面写着） that she is coming back on May Day. 这是成在分词短语做后置定语， 修饰message
等于which says(reads).....
表主动，用现在分词， 用不定式是表将来的，而这里是表示一个已存在的客观事实， 所以不用