He collapsed from a heart attack.

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

My blood type is A.

He collapsed from a heart attack.

He is working on the project with his whole heart and soul.

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

People with strong general immunity are less likely to catch a cold.

His role is to fulfill his responsibilities as a leader.

In French, the partitive article plays a very important role.

The greater part of the time is spent on work.