Ithinkitmustbeveryinterestingtotravelaroundtheworld.Butitcosts__muchmoneyandsometimesitisfullofdanger.A.oneB.twoC.threeD.four

问题：Ithinkitmustbeveryinterestingtotravelaroundtheworld.Butitcosts__muchmoneyandsometimesitisfullofdanger.A.oneB.twoC.threeD.four

答案：↓↓↓

贾维嘉的回答：

网友采纳　　选择A　　此处是one是代词,相当于someone、somebody.　　egTofinishstudyEnglishwell,oneshouldstudyhard.　　本句也符合句型itcostssb.somemoney　　供参考.