when she came in,she was surprised to find a stranger _at the back of the classroomwith his eyes_

问题描述:

when she came in,she was surprised to find a stranger _at the back of the classroomwith his eyes_
upon her.
A.seating fixing B.to seat .fixing C.having seated ,fixed D.seated fixed

答案是 D.seated,fixed
这里的seated相当于sitting
一个人坐在教室后面,眼睛直勾勾地看着她.
eyes fixed on眼睛盯着...看
可以看作是固定用法吧