to choose not to participate in something
выбрать не участвовать в чем-то (vybrat' ne uchastvovat' v chem-to)
"You can opt out of the newsletter at any time."
"Вы можете отказаться от рассылки в любое время." (Vy mozhete otkazat'sya ot rassylki v lyuboye vremya.)
to have a small opportunity to start working in a company or...
tired or annoyed with something
To be familiar with a routine or procedure.
To express all your feelings honestly.
To prepare for future work or success.
to do what you promise to do