Which language is good for me in the IT/CS/AI industry?

Hello, everyone, this is my first post. I studied computer in Chinese, and our school allows us to choose other languages as second languages.There are German, French, Japanese and Spanish. I would like to ask you which language you would choose as your second language. Thank you. My English is not particularly good. If there are any mistakes, please point them out.

ps:I also learning Arabic.its so cool and hard

Thank you again, and wish everyone happiness and well-being.

ps2:im sorry someone tell me to study English，In fact, English is a compulsory course for almost all students in China, so what I want to ask here is actually how to choose my fourth language.