Which language should be added next to sololearn ?

Question

sololearn is a great platform to learn ,code ,challenge and grow . It already has 12 skills which should be added next .

Answer 1

XML?

Answer 2

An android development course

Answer 3

https://code.sololearn.com/WQYApZt67VWn/?ref=app

Answer 4

visual basic , Android development , P5.js , Processing , NodeJs , Bootstrap ......