Try to fulfill your duty. ✬

We fulfill our obligations. ✬

I tried to fulfill my duty. ✬

You must fulfill your duty. ✬

He couldn't fulfill the promise he made to his father. ✬

You should fulfill your promises. ✬

I can no longer fulfill my obligations. ✬

Tom didn't fulfill his obligations. ✬

I didn't fulfill my obligations. ✬

Fulfill your duty. ✬