When he came back he found the bag he had over the seat was gone.A. left hangingB. left

问题补充：

When he came back, he found the bag he had over the seat was gone.

A. left hanging

B. left to hang

C. left hung

D. to leave hanging

答案：

(答案→)A. left hanging

B. left to hang

C. left hung

D. to leave hanging

解析：

这题考查的是leave +宾语+doing，“使…处于…状态“，he had left hanging over the seat这里作定语修饰the bag，句意是：当他回来时，他发现他挂在椅背上的包不见了。选A。