Usage Examples Present Perfect vs Past Simple

• I've known Sarah for five years. -
• Has your mother done the shopping already? -
• I had pancakes for breakfast. -
• I didn't go to the university last week. -
• What interesting foods have you eaten in your life? -
• Mary has not started her essay yet. -
• The teacher hasn't seen you this week. -
• It is the worst day I have ever had. -
• I stayed home last night. -
• Did we take this bus last time? -
• John liked my new book. -
• My brother didn't play hockey at school. -
• Anna has met me today. -
• Have you ever been to Ukraine? -
• Where did you work five years ago? -
• Rosie didn't bake this cake, I did. -
• Who is the smartest person you have ever met? -
• I have already finished my project. -
• My grandmother read this newspaper yesterday. -
• My sister was born in Italy. -