Usage Examples Present Perfect vs Past Simple

• I didn't do it on my own. -
• They haven't lived here for years. -
• I stayed home last night. -
• I have already finished my project. -
• My sister was born in Italy. -
• Who is the smartest person you have ever met? -
• Anna has met me today. -
• Have you ever been to Ukraine? -
• The teacher hasn't seen you this week. -
• I didn't go to the university last week. -
• I had pancakes for breakfast. -
• I haven't bought a new computer yet. -
• Have you ever met a celebrity? -
• We went to Paris three months ago. -
• Why did Anna go to Manchester two weeks ago? -
• My grandfather did not work at a bank. -
• You've spilt the water and now the floor is wet. -
• I've known Sarah for five years. -
• Emily didn't see you yesterday. -
• Who did you meet at the party yesterday? -