Linda began working as nurse in this hospital two years ago. A. Linda has been working as a nurse in this hospital two years ago. B. Linda worked as a nurse in this hospital two years ago.

Linda has been working as a nurse in this hospital two years ago.

Linda worked as a nurse in this hospital two years ago.

Linda has begun working as a nurse in this hospital for two years ago.

Linda has been working as a nurse in this hospital for two years.