English is the official business language accross the world. Almost all countries accross the workd will learn english as a second language as places like america and england have such a huge influence over businesses and countries. Spanish is also very useful as a lot of countries speak spanish, however you are for likely to find someone who speaks english in smaller countries than someone who speaks spanish. Although, german can be just as useful as english as many large businesses have thier HQ in Switzerland and mainly in the german speaking part
Mandarin Chinese is the most spoken language in the world.
Mandarin Chinese is the language spoken by the most people in the world as a native language.
Mandarin is the most widely spoken language in the world.
Mandarin Chinese is the language with the most tones spoken in the world.
English is the most widely spoken language in the world.
Mandarin Chinese is the most spoken language in the world.
Mandarin Chinese is the language spoken by the most people in the world as a native language.
The third most spoken language in the world is Spanish.
Mandarin is the most widely spoken language in the world.
useable and usable are both accepted, yet the proper spelling is usable. (According to most dictionaries.) I even spelled check it and useable is red so usable would be correct.
Mandarin Chinese is the language with the most tones spoken in the world.
In 2014, the most spoken language in the world was Mandarin Chinese.
English is the most widely spoken language in the world.
The language with the largest number of speakers is Mandarin. The language most widely spoken in the world is English.
The most dominant language spoken in the world today is English.
Mandarin is the most spoken language in the world.
If you are asking what the second most spoken language in the world is, by number of total speakers, it's English. If you are asking what the second most widely spoken language is, it's Spanish. If you are asking what language is the most common second language for people, it's English.