(forthisquestionandthefollowing11questions,thereisanunderlinedpartthatindicatedagramaticalerror.Pleasechooseananswerthatcanrepalcetheunderlinedelementssothattheerroriserasedandcorrected.)Whentheybrokeopenthedoor,theyfoundastrangemanliedonthefloorunconscious.
副词应用。根据本句内容，划线部分应填部分是分词作宾语补足语；因此处宾补与宾语(a strange man)之间是主动关系，所以应填现在分词，选项D是答案。