Soon after he stoogd up and walker away,a big stone fell domn to the place he was s() just now填空
问题描述：
Soon after he stoogd up and walker away,a big stone fell domn to the place he was s() just now填空
答
sitting on,这是个定语从句,the place he was s() just now,即 he was s( ) the place just now.stood up 是站起来,说明刚才是坐着的.