单选题The young man ___ th

问题补充：

单选题Theyoungman___thebikewasso___thathehadanaccident.A.by, carelessB.by, carefulC.on, carelessD.on, careful

答案：

C解析本题主要考查介词短语作定语，on the bike作定语修饰名词，so+adj+that,如此...以至于，根据题意故选C.