10.6.14 10.6.15 Fill in: in, for, off, at, of. 1 Zhibek works hard Maths and Science
because she wants to be a cosmonaut.
2 The first man-made satellite blasted
from Balkonur in 1957
3 I'm very interested in the history
space
travel
4 We want to take part the Science
competition.
5 He applied
summer camp
a place at the Physics​

Tina: 1) ___a_ hat, 2) ___an__ orange dress.3)a_ coat and 4)a_ pair of glasses.
Father: 5)___the hat and 6)the_ coat are mine. 7)___the ___ orange dress and 8) pair of glasses are your mother's.

Assistant: Here you are. 1)___a__ stamp 2) an___ envelope 3) ___a___ pen and 4) notebook.
Mr Black: Oh, 5)the___ envelope is too big and 6) the__ pen isn't blue, it's red. Can I have 7)___a___ small envelope and 8)a__ blue pen, please?
2 частина. 1 an. 2. a.3. - , a. 4. an/5.the.6.a, the.7.the.8.-,-9/ a. 10. -. 11. the. 12. -13. a.14.the. 15.-/16.a

Social networks - it is online services intended for the organization of social relationships. In the other words social networks helping us to connect people which are sitting in different places and maybe can't see each other in real life. Social networks have become popular in 1995 with American portal named Classmates.com. In nowadays it allows you to place your own photos or the other pictures, to share with all people moments of your life. You can read news and watch videos. Also you can find and listen to your favorite music! You can type a message to your friend, when you are on a holiday in the other country or you can share impressions of the rest with your parents by sending them photos and videos. (Новый абзац) By the way, social network are a powerful tool for marketing research, as users voluntarily publish information about themselves, their attitudes, interests, preferences, and so on. In view of this, advertisers can very clearly define what exactly people are interested in their ad and send their advertisements to specific users, depending on the information in their profiles such as age, gender, place of residence, and so on. (Новый абзац) Social network has the opposite side of the coin (обратную сторону медали) for its users. Many people do not realize that information placed them in social networks, can be found and used by anyone, not necessarily with good intentions. Information about the participants of social networks may find their employers, relatives, debt collectors, criminals and so on. Bailiffs (судебные приставы) sometimes use social networks to find defaulters or obtain information about their property. Думаю этого будет достаточно:D Удачи!:D