They just ________ the water ________ and didn't do anything about the leaking pipe．A.left…runB.had…to rnnC.had…runningD.had…ran
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C解析have sb／sth doing sth是一个固定句型，意思是“让某人／某事一直做……”比较：ask sb to do sth请某人做某事have sb do sth请某人做某事keep sb doing sth请某人一直做某事