The male reproductive organs include the vas deferens.

We should avoid interfering in the domestic affairs of other countries.

He received the letter challenging him to a duel and began preparing for the duel.

Gender roles are an important element in defining individual behavior in society.

His role is to fulfill his responsibilities as a leader.

His view of life is very positive.

The prevention of venereal diseases is most important in safe sexual behavior.

He decided to have a vasectomy.

She is planning a date with her current boyfriend.

He lost everything.