I do not know the answer to a question
Я не знаю ответ на вопрос (ya ne znayu otvet na vopros)
"I don't know what time the movie starts. Your guess is as good as mine."
"Я не знаю, во сколько начинается фильм. Твоя догадка не хуже моей." (ya ne znayu vo skolko nachinayetsya film tvoya dogadka ne khuzhe moyey)
to be fully understood or have a strong impact
to hide the truth about something
too busy or overwhelmed to handle more tasks
someone who complains or cries easily
to study very hard
To continue believing in a positive outcome.