1． native adj.出生地的；土生土长的
2． run v．控制；管理
3． fasten v．系牢，缚紧
4．loose adj.稀松的，疏松的
5．tool n．工具
6．fold v．折叠，对折
[语境运用] 用所给词的适当形式填空。
1．They only stood there with their arms folded (fold) in front of their chest rather than give us a hand.
2．I hadn't intended to get much from the business I ran (run) the first year, while it turned out so well.
3．Your smile is one of the strongest tools (tool) that make it possible for you to meet new people.
