Раскрывая скобки, напишете каждое предложение три раза, построив условные предложения i, ii и iii типов. образец: if you (to be) free, i (to come) to see you. if you are free, i will come to see you. if you were free, i would come to see you. if you had been free, i would have come to see you. 1) if you (to be) busy, i (to leave) you alone. 2) if i (not to be) busy, i (to go) to the concert. 3) if i (to get) a ticket, i (to go) to the concert. 4) if i (to live) near a wood, i (to gather) a lot of mushrooms. 5) if my father (to return) early, we (to watch) tv together.

1) If you  are busy, I  I will  leave you alone.
If you  were busy, I  I would  leave you alone.
If you  had been busy, I  I would have  leave you alone
2) If I am not busy I will go  to the concert., 
If I wasn't busy,I would  go  to the concert. 
If I had not been busy, I would have gone to the concert.
3) If I  get a ticket, I will go to the concert. 
If I  got a ticket, I would go to the concert. 
If I had got a ticket, I would have gone  to the concert. 
4) If I live near a wood, I will gather a lot of mushrooms.
If I lived near a wood, I would gather a lot of mushrooms.
If I had lived near a wood, I would have gatherd a lot of mushrooms.
5) If my father returns early, we will watch TV together
 If my father returned early, we would watch TV together
. If my father had returned early, we would have watch TV together

what can homeschooling give? let's look at the positive side of it.

there is an individual program, not standardized training. at home, you can build your own educational program, based on your interests.  

there is more creativity, less boredom. who said that learning is what happens in the walls of the school, at the desk, with a textbook in hands and a teacher at the blackboard? what prevents you from going to the park to study botany or visit the planetarium when you pass the star system? the school framework does not limit you, and for you the whole world is an educational space. the ability to gain knowledge not from textbooks, but from primary sources not only increases efficiency, but also develops enthusiasm for the subject.

how not to admit the flexibility and convenience. no one doubts that a huge amount of time at school is spent simply in vain. and if we take into account school activities, time for the road, it turns out that homeschooling can be built much more efficiently than school.  

as a conclusion, i want to say that even if there are difficulties, their overcoming can be a plus in the future, because when entering the university the child will develop all the skills for successful learning, self-education and career development .

The Internet, a global computer network spanning millions of users around the world, began in the United States in 1969 as a military experiment Information transmitted via the Internet travels the shortest route from one computer to another. This allows any two computers on the Internet to stay connected to each other as long as there is one path between them.

Thanks to this technology, if some computers on the network are disabled (e.g. as a result of a nuclear explosion), information will simply flow around them. Most Internet host computers (over 50%) are in the US, the rest are in over 100 other countries. Although the number of host computers can be counted quite accurately, no one knows exactly how many people use the Internet; there are millions of them, and their number is growing by thousands every month around the world. Most people who have access to the Internet use the network only to send and receive email. However, other popular services are also available on the Internet: reading USENET news, using the World Wide Web, telnet, FTP, Gopher. In many developing countries, the Internet can become a reliable alternative to expensive and unreliable telecommunications systems in these countries. When they send emails, they only have to pay for phone calls to local service providers, not for calls in their countries or around the world. But who actually pays to send e-mails over the Internet over long distances, all over the world? If people see what they can make on the Internet, the commercial use of the network will increase dramatically. For example, some Western architectural companies and clothing centres are already transferring their basic designs and concepts over the Internet to China, where they are being processed and refined by qualified - but inexpensive - Chinese computer designers. Thanks to this, you can get on any of the computers on the route, intercept and even change the data sent via the Internet. Despite the fact that there are many powerful encoding programs, almost all information transmitted over the Internet, is transmitted without any encoding, ie "in its purest form. Some US banks and companies even conduct transactions over the Internet.