2.I (did/has done)homework yesterday.
3.My parents (bought/have bought)a new dining room.
4.They (have visited/visited) last summer.
5.My classmates (watched/have watched) a new interesting film.
6.My grandparents (cleaned up/have cleaned up) litter in the garden.
7.Last summer we (went/have gone)to Moscow.
8.We (visited/have visited)children in local hospital last week.
9.My mum (decorated/has decorated) the house yesterday.
10.My brother ( made/has made) sandwiches for us.