How to say see to it that this letter is posted without fail. in Japanese
1)
このこの(kono) (n) this手紙手紙(tegami) (n,adj-no) letterをを(wo) (prt) indicates direct object of action/indicates subject of causative expression/indicates an area traversed/indicates time over which action takes place/indicates point of departure or separation of action/indicates object of desire, like, hate,必ず必ず(kanarazu) (adv) always/without exception/necessarily/certainly/without fail/positively/invariably投函投函(toukan) (n,vs) mailing/postingする(vs-i) to do/to cause to become/to make/to turn/to serve as/to act as/to work as/to wear/to judge as being/to view as being/to think of as/to treat as/to use as/to decide on/to choose/ to be sensed/to be/to be worth/to cost/to pasようにしてno dictionary result, likely a conjigated verbくださいください(kudasai) (exp) please give me/please do for me。。(。) Japanese period "."
