Well there is best friends,close friends, good friends, bad friends, weird friends, cool friends, mean friends and so on and so forth. But there is the friend that is closer than you own family, that's the best one. But i don't know what you are looking for. ._.
A 7 letter word containing thousands of letter is a Mailbox
si te refieres a el verbo tengo en pasado en español es tenía
No, it is not a correct sentence.
The mistake is in the word <em />worse - you need to use the superlative (final) form of the adjective. Bad - worse - worst. So the correct answer would actually be:
Deciding to go to Barcelona was the worst decision I ever made.