Now that we have lost all the documents, its no use______me and saying its all my fault.
A、tlking on
B、coming on
C、ounting on
D、turning on
答案分析：talkon\"谈论\"；comeon\"偶然遇到\"(on是介词，也可用upon)；counton\"指望，依赖\"，如：Don’tcountonyourrelativestohelpyououtoftrouble．\"别指望你的亲戚帮你摆脱困境。\"turnon在此句中的意思是\"对……发怒，向……突然袭击\"，如：Thedogturnedontheboyandbithimintheleg．\"那条狗向那个男孩扑去，在他的腿上咬了一口。\"