sentence 1: How do I know if I'm good?
 sentence 2: How do I know what I'm good at? sentence 1: Is joining internet discussions and debates worth it?
 sentence 2: WHAT IS ANTI BULLYING ACT? sentence 1: How do you choose what to wear on a given day?
 sentence 2: How do you decide what to wear each day?
not same meaning
not same meaning
same meaning