Помогите пожалуйста дам 20 балов, Past Simple or Present Perfect.
5-10

5. Sue came up to the front door and pushed the doorbell, but nobody answered.6. Why has Kate taken all the food away? - I'm not hungry. I had a snack just an hour ago.7. Where have you been since morning, Bob? Henry has phoned you several times today. - When did he phone me last time? - Half an hour ago.8. Why has Dolly chosen this hotel? - Her friend stayed in this hotel last year and she strongly recommended Dolly to spend her holidays here.9. Have you travelled by ferry before, Tim? - Yes, I have. But I travelled when I was a little boy and I don't remember that voyage very well. 10. Why haven't you unpacked your suitcase yet, Ron? - I came only half an hour ago and decided to take a shower first.