sentence 1: How do I know if I'm good?
 sentence 2: How do I know what I'm good at? sentence 1: How do I prepare for neet 2017 to get AIR 1?
 sentence 2: How can I crack NEET 2017? sentence 1: What is the best way to prepare for TOEFL?
 sentence 2: What is the best way to prepare for taking the TOEFL?
not same meaning
not same meaning
same meaning