I left out the following sentences.Thank you very much.

1) As a matter of fact, they don’t just sell products, they sell lifestyles. They show the lives of famous people without even showing the brand they are trying to sell.
2) When the first ads came to the TV screens (came on TV???) people used to switch channels to avoid them.
3) Children turn into victims because they are helpless (defenceless) before the might of the advertisers.They can be easily convinced to buy anything
4) We went on holiday to Barcelona. We stayed in a little holiday house. (a kind of house you rent for a short period of time).
5) We took a bus on a sigtseeing tour. In the afternoon we walked along the Ramblas, which is the biggest main street in Europe.

No problem! Here are the explanations for the sentences you left out:

1) "As a matter of fact, they don’t just sell products, they sell lifestyles. They show the lives of famous people without even showing the brand they are trying to sell."
This sentence highlights that advertisements not only aim to sell products but also to sell the associated lifestyle. Advertisers often use famous people to promote their products indirectly, without explicitly showing the brand.

2) "When the first ads came to the TV screens (came on TV???) people used to switch channels to avoid them."
The phrase "came on TV" is correct. This sentence is referring to the time when advertisements first started appearing on television. People would switch channels to avoid watching these ads.

3) "Children turn into victims because they are helpless (defenseless) before the might of the advertisers. They can be easily convinced to buy anything."
This sentence explains that children can be easily influenced and persuaded by advertisers. They are considered victims because they are defenseless against the tactics used by advertisers to convince them to buy certain products.

4) "We went on holiday to Barcelona. We stayed in a little holiday house (a kind of house you rent for a short period of time)."
This sentence describes a vacation trip to Barcelona. The speaker mentions that they stayed in a small holiday house which is a type of house that can be rented for a short period of time.

5) "We took a bus on a sightseeing tour. In the afternoon we walked along the Ramblas, which is the biggest main street in Europe."
This sentence talks about the activities during the vacation trip. The speaker mentions that they took a bus for a sightseeing tour and later in the afternoon, they walked along the Ramblas, which is considered the largest main street in Europe.