题目内容：

His grandpa died five years ago.转化成_____five years___his grandpa____

优质解答

如果第一个空格只能填一个词的话,那么应该是：
__It's_five years__since_his grandpa__died__.
如果是完整的说法,应该是：
__It has been___five years_since__his grandpa__died__.
其中,第一种说法是第二种说法的简单形式,多用在美语口语中.