Mrs Green found ___diffcult to get to sleep on the plane 填什么?（that this it her)
问题描述：
Mrs Green found ___diffcult to get to sleep on the plane 填什么?（that this it her)
请详述,O(∩_∩)O谢谢
答
填it,做形式宾语.find it difficult=find that it is difficult.