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

Question

Помогите пожалуйста с Past Simple or Present Perfect
1)Helen ( to invite) her classmates to her home last Monday. They had a good time together.
2)....you ( to buy ) any Christmas present?-Not yet.
3)Tom (to be ) already to the library. He is reading a very interesting book.
4)Alice (to collect) Entlish and German coins last year.
5) l (to do) my homework. l cam go out with my friends.

Answer 1

Invited
have you bought
has already been
collected
have done

Answer 2

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