Korean is very different to Japanese and Chinese.. By the characters especially. It is actually a very useless language, that is why all the Koreans are learning English because they realize that if you learn Korean you can only use the language in Korea. But once you learn Korean and English, I believe that it will also do good because since there are so many Koreans who are in need of being taught in English, it gives a huge effect for those who are teaching. It will do you very good..
说实话,我认为日语是最好的,在我看来,那些说日语的人看起来都很不错而且我很喜欢他们说话的语气。我不能说这是最好的,
但是对我个人来说,日语是最棒的。
从实用性上来说那肯定是汉语了。这是世界第一大语种,如果你学会说汉语并学习其它语言,你绝对能找个好工作。我今年15岁