It has nothing to do airports, only not to open another thread.

    From time to time I read some postings here, focusing the ones left unanswered, so I found this:       http://www.sk.com.br/forum/display_message.php?message_id=44219

     So far, so good, Deivis, the only flaw I noticed was in "suficient time" with one single "f", after correction it would be "sufficient" (so, "f" is doubled then).

     Where it reads, teachers/treiners would be teachers/trainers.

    However it was a quick glance I gave it.

    The message  per se, continues being relevant and  applies up to this day, very eye-opener indeed!      Yet, everything considered you have good English skills, congratulations and keep up the good work!