Her only duty in his eyes is to remain chaste.

He might have decided that since his only duty was to represent the needs of the People, any such details were unnecessary.

Your only duty is to hold it open for those who have less of a chance simply because they aren't white.

The only duty I feel here is to the children.

The guests' only duty during their stay is to make more mice.

Her only duty was, as Robert had said about the zoo, to look after their health and welfare.

The hat tax was not the only duty raised by the government on household items.

My only real duty is to the one I love.

Our only duty is to protect the people from the things that come out of the darkness.

Their only duty was to do routine chores in the camp.