是：Only when you learn in a fun way （will you） want to keep on doing it

题目

是：Only when you learn in a fun way （will you） want to keep on doing it
还是：Only when you learn in a fun way （you will） want to keep on doing it

答案

Only when you learn in a fun way （will you） want to keep on doing it
这一句对
这是Only前置的倒装句,情态动态要提前