Usage Examples Present Perfect vs Past Simple

• I didn't go to the university last week. -
• Laura has never been abroad. -
• Have you ever been to Ukraine? -
• You've spilt the water and now the floor is wet. -
• I haven't bought a new computer yet. -
• We have just got back from our holidays. -
• Who is the smartest person you have ever met? -
• Who did you meet at the party yesterday? -
• I have already finished my project. -
• Did they go to the university with you? -
• I didn't do it on my own. -
• My grandfather did not work at a bank. -
• Did you have a pet when you were a child? -
• They haven't lived here for years. -
• It hasn't rained a lot this year. -
• Has your mother done the shopping already? -
• My sister was born in Italy. -
• My brother didn't play hockey at school. -
• I went to Spain last year to study Spanish. -
• I've known Sarah for five years. -