perform a duty

Time for every good man and true to perform his duty.

After the long wait, he was ready to perform his duty to the People.

In order to perform his duties, he has a project staff.

In 2377, he was still well enough to perform his duties.

He would probably, for a time at least, continue to perform his duties.

But what was there to do other than perform his duties?

By the late 1880s she began to perform duties as a private secretary.

Or perhaps he had failed once again to perform his duties the night before.

All we ask in return is that you allow us to perform our duties.

War is also hard on the soldiers who have been left behind to perform needed duties at home.