he suddenly saw sue (across) the room he pushed his way (through) the crowd of people get to her为什么用across 为什么不能用over为什么用through 为什么不能用across /into
问题描述：
he suddenly saw sue (across) the room he pushed his way (through) the crowd of people get to her
为什么用across 为什么不能用over
为什么用through 为什么不能用across /into
答
over means above something.
push through (习惯用法): 挤过去, 完成
答
across the room 在房间另一边 只能这么用
push through 相当于穿过人群 也是固定用法