con su deber

No tengo ninguna duda de que está cumpliendo con su deber.

I have no doubt that he is fulfilling his duty.

— M: El maldito (1931)

Uno debe cumplir con su deber.

One must do one’s duty.

Cumplió con su deber.

He did his duty.

Él sintió que había cumplido con su deber.

He felt he had done his duty.

Cumple con su deber.

He does his duty.

Debería cumplir con su deber.

He should do his duty.

Ese soldado ha cumplido con su deber.

That soldier has done his duty.

— Adiós, muchachos (1987)

Él cumplió con su deber.

He did his duty.

Inglaterra espera que todo hombre cumpla con su deber.

England expects every man to do his duty.

Deberían cumplir con su deber.

They should do their duty.