My father's just back from work,-------?应该填什么,’s是谁的缩写

应该填 isn't he 。句子中没有过去分词,可以判断 ‘s 不是 has ,而是 is 这是前肯后否的反义疑问句,所以 用 isn't he 。如果是：My father's just come back from work,后面就应该是：hasn't he