30．When he came back he found the bag he hadover the seat was gone.A. left to hangB. left

问题补充：

30．When he came back, he found the bag he hadover the seat was gone.

A. left to hang

B. left hanging

C. to leave hung

D. to leave hanging

答案：

A. left to hang

(答案→)B. left hanging

C. to leave hung

D. to leave hanging

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