I always back up my important files to an external hard drive.

I realized I forgot my wallet at home, so I had to turn back and get it.

I decided to take a step back and reevaluate the situation.

I need to move back to my hometown.

He had to hold back his tears during the emotional speech.

Please give back my book.

Sit back and enjoy the show.

She is practicing the back crawl in the swimming pool.

There is no going back once you have pressed the button.

She performed a perfect back dive.