to take on a task that is too difficult
किसी काम को लेना जो बहुत कठिन हो (kisi kaam ko lena jo bahut kathin ho)
"He bit off more than he could chew by promising to finish the work alone."
"उसने अकेले काम खत्म करने का वादा करके बहुत कठिन काम ले लिया था।" (Usne akele kaam khatam karne ka wada karke bahut kathin kaam le liya tha)
to know someone very well
to make progress or advance
to find the real reason or cause of something
to persuade someone to do something
analyzing unknown processes by studying their inputs and out...
to use influence or connections to get what you want