Usage Examples Present Perfect vs Past Simple

• My mum has lost her keys and cannot get into the house now! -
• We went to Paris three months ago. -
• I haven't bought a new computer yet. -
• I went to Spain last year to study Spanish. -
• I had pancakes for breakfast. -
• Has Anna passed this exam already? -
• Did they go to the university with you? -
• When did Alice move to Portland? -
• I didn't do it on my own. -
• I have already finished my project. -
• Have you ever been to Ukraine? -
• Has James just left? -
• My sister was born in Italy. -
• Who is the smartest person you have ever met? -
• Did your mother go to a doctor on Tuesday? -
• What did your husband do last month? -
• It hasn't rained a lot this year. -
• Emily didn't see you yesterday. -
• You've spilt the water and now the floor is wet. -
• My brother has been to Mexico three times. -