ответить, , можно кратко
1.the necessity of a global language. is a global language really needed?
2. advantages and disadvantages of a global language?
3. english as a global language. is english really appropriate as a global language?
4. your predictions about a global language of future. what language is possible to be global in a) 20; b) 50; c) 70; d) etc. years time?

Тут просят написать свое мнение, но раз тебе сложно выражать его на английском, то можешь воспользоваться моим:

1) We are living in peaceful times, political and cultural borders are slowly dissolving and humanity is working hard together to move technology, medicine, culture and science in general forward, not just for their country, but for the whole world, and for this cosmopolitan system a global language is needed, (2) albeit a lot of people are still less smart/benevolent/understanding then the other ones, and for them learning to speak to everybody in the world would be a disaster for us. In my opinion, there must be a global language, but other ones shouldn't perish, as so uniqueness of the whole nations and their culture will become extinct. (3) English is becoming the most prevalent language out of all, and, as for me, it seems quite good-functioning for this role, it is very rich, diverse, flexible  and really easy-to-learn, which are the fundamental characteristics of the global language. (4) From my perspective, in the next 20-50 years English will definitely be set as a global language, although I'm not sure if it'll stay this way later on, humanity is developing rather fast and so a new language could occur, easier and more flexible, actually there are a few existing already, the most famous example - Esperanto, developed in the late 19th century by L. L. Zamenhof, which took him 10 years.

Объяснение:

Я решил не отвечать на вопросы по отдельности а соединить их в один текст, можешь разделить на месте цифр, если тебе так больше нравится