Выберите из вариантов ответов 1

21 - a

22 - c

23 - b

24 - c

25 - b

Mobile phones in our livesWe live in the time when we are surrounded by various devices. Many people can’t imagine their lives without using a mobile phone. I can say that I’m not an exception too J Maybe 10 years ago they were not so popular. My parents even say that they didn’t have phones and their life was very interesting. But I can’t understand them. Nowadays mobile phones play a vital role in our life, I think so. Many children (even 1st form) ask their parents to buy them mobile devices, saying that everybody in their classes has mobile phones. As for me, I have … (марка телефона). It’s not iPhone 6, but I’m proud of my mobile device. I listen to music, watch videos, and communicate with my friends with the help of mobile. I’m sure it’s difficult to find a pupil who can live without chatting in vkontakte, facebook, viber or posting photos in instagram. I like to make photos (I photo everything I see: delicious food, beautiful nature, unusual thinks; I like to make selfie). I like to speak with my boyfriend (girlfriend) for hours (especially at night). If I forget my phone at home, I feel nervous all day long. I understand that it is not normal, but I can’t do anything with this.

В английском языке есть два артикля: определенный the и неопределенный a (an).
Определенный артикль the произошел от указательного местоимения that, указывающий конкретный предмет . 
Например : 
The boy play with friend /
Неопределенный артикль a произошел от числительного one , то есть некий предмет . 
Например : 
 an aplle 
 И еще Неопределенный артикль в английском языке имеет два варианта – a и an. Если существительное начинается с согласного звука, то используется форма a, если с гласного – форма an.