1 Rome is one of the oldest
2 São Paulo is the
3 London is the most
4 Paris is one of the most
5 San Francisco is the
6 Madrid is the highest

a) beautiful cities in europe.
b) expensive city in england.
c) cities in the world.
d) friendliest city in the USA.
e) capital city in europe.
f) biggest city in south america.​

1) Rome is one of the oldest cities in the world.
This means that Rome is one of the cities that has existed for a very long time. The word "oldest" refers to the age or the length of time that the city has been around.

2) São Paulo is the biggest city in South America.
This means that São Paulo is the city with the largest population and area compared to all the other cities in South America. The word "biggest" refers to the size or magnitude of the city.

3) London is the most expensive city in England.
This means that London is the city where prices for goods and services are highest compared to all the other cities in England. The word "expensive" refers to the cost or the amount of money needed to buy things in that city.

4) Paris is one of the most beautiful cities in Europe.
This means that Paris is considered to be one of the cities in Europe that has a very pleasing and attractive appearance. The word "beautiful" refers to the aesthetic qualities and visual appeal of the city.

5) San Francisco is the friendliest city in the USA.
This means that San Francisco is known for being a city where people are kind, welcoming, and helpful towards others. The word "friendliest" refers to the attitude and behavior of the people in that city.

6) Madrid is the capital city in Europe.
This means that Madrid is the city that serves as the political and administrative center of a country in Europe. The word "capital" refers to the city where the government is located.

In summary, the answers to the questions are:

1) c) cities in the world.
2) f) biggest city in South America.
3) b) expensive city in England.
4) a) beautiful cities in Europe.
5) d) friendliest city in the USA.
6) e) capital city in Europe.

These answers were determined by understanding the specific information given in the statements and matching them with the options provided. Understanding the meanings of certain words, such as "oldest," "biggest," "expensive," "beautiful," "friendliest," and "capital," was crucial in arriving at the correct answers.