Зачем в словах livin', puttin', foolin' и т.д. пишется в конце апостроф?

Ilive in (name of the the city is very beautiful. there are a lot of attractions. and also a lot of entertainment centers. with the time (the name. of the city. improved (eh). in it (him) have built a lot of important for the people of buildings. schools, shops, theatres-it's all in my native city. with time (the name. city) landscaping. people planted a lot of trees, flowers and bushes. because of this, (the name. the city became (ala) autumn is beautiful (oh). i was born in this city, and live in it. for me (the name. city) - the best city                                                                                                           .                                                                                                       я живу в (назв. город красивый. в нём много достопримечательностей.   а так же много развлекательных центров. со временами ( назв . города . ) улучшился(ась). в ней ( нём) построили много важных для людей построек. школы, магазины, театры-всё это есть в моём родной городе. со временем (назв . города) озеленение . люди посадили много деревьев, цветов и кустов.   из за этого ( назв . города ) стал(ала) осень красивым(ой). я родилась в этом городе, и живу в нём. для меня ( назв . города) - лучший город.

Chelyabinsk – a city with almost three hundred years of history. A lot of interesting things you can see in the city, for example, in the Realm of love. But any resident of Chelyabinsk can tell you that you saw nothing, if not visited on Kirovka. So let's go over this unique street because it's like a separate town.Before the revolution this street was known as the Ufa. She was the social center of the city: here was a brisk trade. Today it is a pedestrian zone and the place of parties. On Kirovka may not be a bad mood. Everything seems to be filled with a special charm. The entrance to the Kirovka is a stylized gate the old city Chelyaba, established in the year of 265-th anniversary. Spires crowned double-headed eagle of the Russian Empire and the arch of the modern coat of arms of Chelyabinsk.In addition to the "residents", a feature of Kirovka is a constant interesting and creative life. One day we saw an exhibition of photographs, but two days later stereostone. Three-dimensional images that can be seen. Musician-romantic play any girl touching melody saxophone. But still the melody will be one dedicated to his beloved. At one time in Kirovka were many fashionable shops. And ladies that was staying at the shop Windows, looking at themselves and and the outfits. By the way, mirror this fashionista has a secret – every girl in it seem to be slimmer. And next on the bench are artists who are willing to capture you.In Kirovka you can see the legendary Lefty, and in the hand...