Bite the dust means to be defeated, fail, or die. It's commonly used in competitive contexts.

'Break the ice' means to initiate conversation or ease tension in an awkward situation.

This idiom means working late or studying hard, often for exams or important work.

The idiom means heavy rainfall. Option B correctly uses it in context.

'Hit the books' is a common idiom meaning to study hard, especially used by students.

This idiom means something happens very rarely or almost never. A blue moon occurs approximately every 2-3 years.

'Keep your fingers crossed' is an idiom expressing hope or wishing for good luck in a situation, often used before exams or important events.

'Between a rock and a hard place' means facing a dilemma where both choices are equally unfavorable.

'Not cut out for the job' means lacking the necessary abilities or qualities for a position.

'Going the extra mile' metaphorically means doing more than expected or required in work or service.