Usage Examples Present Perfect vs Past Simple

• Have you ever been to Ukraine? -
• I didn't do it on my own. -
• It is the worst day I have ever had. -
• Did they go to the university with you? -
• My brother didn't play hockey at school. -
• When did Alice move to Portland? -
• I didn't go to the university last week. -
• I've known Sarah for five years. -
• Have you ever met a celebrity? -
• Did you have a pet when you were a child? -
• Who is the smartest person you have ever met? -
• Where did you work five years ago? -
• It hasn't rained a lot this year. -
• They haven't lived here for years. -
• My mum has lost her keys and cannot get into the house now! -
• Did we take this bus last time? -
• Emily didn't see you yesterday. -
• Rosie didn't bake this cake, I did. -
• Who did you meet at the party yesterday? -
• Laura has never been abroad. -