my father is not -----home,he is ------a meeting.中横线上填什么,为什么那样填
问题描述：
my father is not -----home,he is ------a meeting.中横线上填什么,为什么那样填
答
1.at 2.having
at home在家是固定搭配,have a meeting开会也是固定搭配,因为be 动词后加动词的现在分词形式,所以用having可是选项中没having