Meaning: abandon something (speedily). To leave a place because it is dangerous or unpleasant

Example Sentences:
1.- Once I realized that John was going to be at the party, I beat a hasty retreat.
2.- After spotting my ex-boss in the restaurant, I beat a hasty retreat.

Meaning: start to give your attention to the simplest and most important matters after ignoring them for a while.

Example:
The president’s economic package has failed to win the financial institutions’ trust and he will have to get back to basics.

Meaning: waste one’s efforts by pursuing the wrong thing or path
to make a wrong choice. Make a mistake or wrong assumption in something you are trying to achieve.

Example Sentences:
1.- It was a very sensitive case and yet for over one year the investigators kept barking up the wrong tree.
2.- If you think you will solve the problem by following those steps, you are barking up the wrong tree.

Meaning: very exciting and successful.

Example: We take part in the events organized by Jack and Rose Events Company, because they go with a real bang.