Помогите, молю, ничего не разумею!!! Хоть одно!

2)1.just
2.yet
3.already
4.before
5.never
4)1.have you ever explored a haunted mansion?
2.i have never flown in a helicopter
3.they have never ridden a horse
4.my teacher has never been to Paris
5.has she ever visited Louvre museum
6.has your best friend ever been to Poland?
3)1.been
2.gone
3.been
4.gone
5.gone
1)1.across
2.back
3.out
4.round