Ответ:
1. How many people on the earth speak english?
2. How many native-english-speakers live on the earth?
3. In which endeavors does people mostly use english as an international language?
4. How many varieties of english does exist?
5. Is english used in computers/social medias?
6. Why english language has become so popular and widely-used?
7. How many languages had been suggested as a global language?