Choose the best particles to complete the sentences.

Choose the correct option.

You don't need to keep [back|out|up|on|off|in] washing the dishes. I'll do it for you.

I've never managed to keep [back|out|up|on|off|in] with my parents' requirements.

You'd better keep [back|out|up|on|off|in] of my way.

Keep [back|out|up|on|off|in] the grass or you'll pay a fine!