This task is insoluble to(for) me.请问是用 to 还是 for 或者其他的 介词

This task is insoluble to(for) me.请问是用 to 还是 for 或者其他的 介词 请问选哪个介词!为什么?this is a good information for/to me This is a challenge for me 还是to me 请问My new math teacher is friend ---me 是用to 还是 for 还有to 和for order 的用法请问是order sth to sb 还是order sth for sb 或者是其他的? be harmful ( )sb.括号里填to,of还是for,还是其他的介词? have a good time for you 是应该用介词for 还是应该用介词to? ticket 介词用to还是用for be suitable后用什么介词,是to还是for Even for a beginner,this task is not impossible to fulfill. two weeks (is not) enough for us to finish this task.we need this is a better chance for me 还是 to me ? 为什么