There is only 15 minutes. Hurry up or we’ll miss the train.A. leavingB. to leaveC. leftD.

问题补充：

There is only 15 minutes. Hurry up, or we’ll miss the train.

A. leaving

B. to leave

C. left

D. having left

答案：

A. leaving

B. to leave

(答案→)C. left

D. having left

解析：leave与 15 minutes为动宾关系所以用过去分词作定语， 选C。 仅剩15分钟了，快点否则我们赶不上火车了。