Английский словарь американских идиом - make a mountain out of a molehill

To think a small problem is a big one; try to make something unimportant seem important. * /You're not hurt badly, Johnny. Stop trying to make a mountain out of a molehill with crying./ * /Sarah laughed at a mistake Betty made in class, and Betty won't speak to her; Betty is making a mountain out of a molehill./