Tell Mommy what happened.

You can tell me anything.

tell someone the good news

I'm going to go tell him the good news. / Пойду расскажу ему хорошие новости.

get the word out

We need to get ahold of someone who can get the word out. / Нам надо связааться с кем-то, кто может рассказать всем.

It's best we come clean now.

I've been told all about you.

Tell me what's going on.

I'm going to let you in on a little secret.

а ну-ка расскажи перевод на английский

Why don't you tell me?

расскажи чем ты любишь заниматься в свободное время перевод на английский

Tell me what you like to do in your spare time.