It means 1. starting to review, analyze and decide on an important or complex issue, which requires a lot of effort and patience, usually within a team or group; 2. starting to work on a heavy or a longtime task or assignment.
get to work
The part of a country's economic activity that is unrecorded and untaxed by its government.
This isn't an idiom because you can figure out what it means pretty easily. It's an exaggeration - pretending that your money is so eager to leave your pocket that it can burn a hole to get out.
The full idiom is "Free things can be very expensive". An idiom is a turn of phrase that seems to mean nothing, but requires thought to unravel. The reason free things can be expensive, is that they're generally free because they're not very useful.
This means that she can't wait to spend the money she has.
To do work and focus
It means to get to business. Stop beating around the bush and do what needs to be done.
Distill down, or boil down, as an idiom, means to get to the essence of something, or to simplify it.
It means to get down to business, to get to the matter at hand, to get to work. Brass tacks are commonly used to tack upholstery down to the frame. If you "get down" to the tacks, you have stripped away the upholstery and stuffing, and are down to the bare frame again.
I've never heard that idiom before. Perhaps you mean DOWN AND OUT, which means that the person is at a low point in their life, that they're poor in every way and not likely to make a success at anything in the near future.
sit down come over to
The idiom "feeling down in the mouth" means feeling sad or unhappy. It refers to someone looking sorrowful or melancholic, with their mouth turned downwards indicating their emotional state.
This is an idiom meaning to narrow your focus down. It can also mean to narrow your aim and focus on one thing to hit. Picture the zero as a target and you get the idea of the idiom.
The idiom "business as usual" ends with as usual.
Don't interfare to what u are less concern of.
this idiom is similar to "horsing around"- causing trouble
It means to be more concerned about what you are doing than checking on what others are doing.