Помогите пожалуйста с Past Simple or Present Perfect 1)Helen ( to invite) her classmates to her home last Monday. They

1) Helen invited her classmates to her home last Monday. They had a good time together. (Past Simple) 2) Have you bought any Christmas present? - Not yet. (Present Perfect) 3) Tom has already been to the library. (Present Perfect) He is reading a very interesting book. 4) Alice collected English and German coins last year. (Past Simple) 5) l\'ve done my homework. (Present Perfect) l can go out with my friends.