use the present perfect in these sentences1) mary (lose) the key2)

Use the present perfect in these sentences
1) mary (lose) the key
2) we (enter the library
3) they (find) the information for their poster
4) tom and andrew (write) the article for the magazine
5) john (built) the house
6) we read the books about cars
7) mary (come )to the party
8) i (bring) the present for my sister
(Безотлагательно! ДАЮ 20 БАЛЛОВ!!)