Какое правильное слово нужно, Mum wants to buy some veousinrs. for her friends​

.1.-open the window.

-but i have opened the window.

2.i have seen the film.

3.he has opened the door.

4.they have cleaned the room.

ther is a zoo in our town. it is big. there are a lot of animals in the zoo. the are wolves,foxes, elephants, zebras, bears an some others. on sundays parents with their children go to the zoo. children like watching animals' life and feeding them.