In creative work, it's important to do one's stuff rather than copying someone else.

Before signing the lease, it's sensible to do one's sums to make sure you can cover the rent.

If one decides to do one's worst during a cyberattack, the harm caused can be catastrophic.

She earned a black belt in tae kwon do after years of training.

After dinner, she added one more task to the honey-do list: fix the leaky bathroom faucet.

She brushed off the whoop-de-do headlines as trivial and returned to her work.

whoop-de-do, you remembered to water the plants.

When the alarm failed, he bellowed "cock-a-doodle-do" to rouse his sleepy roommates.

At dawn the unmistakable cock-a-doodle-do of the rooster signaled the start of another busy day on the farm.

It's important to be allowed to do one's thing when experimenting with new ideas.