_sadly,the little boy raised his head&had the tears_down on purpose.为什么答案是To be seen crying...falling而不是To be seen crying...fall

问题描述:

_sadly,the little boy raised his head&had the tears_down on purpose.
为什么答案是To be seen crying...falling
而不是To be seen crying...fall

表示正在泪流雨下,正在哭.