"Is English, the world's most spoken language?" Yes, and as A.J said, Chinese - although which version I don't know. Judging only by the Chinese people on italki I'd guess it was Mandarin.

More people speak Mandarin than English, but English is probably spoken and understood in more countries than any other language...at the moment.

Yes, English has been chosen as the international trade language and the choice of languages to be used as the second language citizens of most countries should learn. French was a close runner-up. The French were hoping their language would be used, but English was selected, and has been the most wide-spread language in the world.

yes, although there are many types English. But we can communicate.

English is just not popular. It is important as well..