Nowadays people live in 'A' world of advertisements.
First of all AN advert is A crucial element of modern society and free
market economy.
In this way new firms can easILY become more popular and TO sell THEIR products. In fact coNSumers have a large choice of products on
the market.
Moreover everyone has a right TO advertisE everything 'what' (nie, lepiej THAT) he regards AS best. It is 'a' (bez 'a') normal behavioUr (AmE - behavior, BrE behaviour).
What is more, (przecinek)advertisements usually cause THE lowering OF prices of THE articles.
If AN advertisement was good and many people bought THE product, prices would
be lower. It is OF reciprocal benefit both for the company and FOR THE customers.
On the other hand there are adverts which aren't so innocent as they
'could look like' (nie, lepiej - 'look like'), for example adverts FOR cigarettes or alcohol. I think THAT they shouldn't exist especially on TV. People can't advertise articles which are 'a' poisonOUS for our health.
Summing up, (przecinek) advertisements are not only A part of free market economy but our lifeS as well.
They shouldn't buy everything 'what' (lepiej THAT) they see on TV or on the internet 'every day' (lepiej ...see every day on the Internet).