I can't thank you ____ much for your kindness because without your help I ____ have won the first p说明理由

I can't thank you ____ much for your kindness because without your help I ____ have won the first p
说明理由

我怎么感谢你也不过份,因为没有你的帮助我不可能赢.
too wouldn't

so couldn't

so couldn't .
too…to 太以至于不肯能，表否定

too, would

too，couldn't
我再怎么感谢你也不为过（也就是非常感谢你的意思），因为要是没有你的帮助，我就不能赢得第一名。