Mind your own businessJust yesterday I was going over this with a student. Have you heard this before? If someone tells you to mind your business, that means...
Phrasal verb: Act upTo act up = misbehave (for people); not work properly (for machines). "The babysitter was so frustrated since the children acted up all...
Phrasal verb: Back upTo back up = make a "protection" copy to use if there are problems with the original. "When my computer crashed, I lost many of my files....