Use present perfect. 1)pete. have a look! i (find) a beautiful stone. it is brown. yellow and orange. 2)alice (buy) a new dress today. 3)jack already (meet) his aunt. 4)father, look, we (bring) a new boat. 5) she (have) already lunch.

1) Pete, have a look! I have found a beautiful stone. It is brown, yellow and orange.
2) Alice has bought a new dress today.
3) Jack has already met his aunt.
4) Father, look, we have brought a new boat.
5) She has already had lunch.