hardest

this is the hardest exam i've ever taken.

climbing that mountain was the hardest thing i've done.

finding a solution to this problem is the hardest part.

she has the hardest job in the entire company.

learning a new language can be the hardest challenge.

the hardest worker on the team always gets results.

dealing with the hardest questions requires careful thought.

he faced the hardest of circumstances with courage.

the hardest part about dieting is resisting temptation.

this is by far the hardest puzzle i've ever seen.

the hardest decision is often the right one.