选C
解析：此句是虚拟语气 根据句意可知表示的是与将来事实相反的虚拟语气,主句应该用过去将来时.故答案为C项.麻烦举几个这样的例子，The weather report said it would rain tomorrow. If I had took umbrella with me,I would not have been caught in a rain. there was nothing that she would not have given to the child.