Постройте правильно предложения: 1.to/people/have/moon/travelled/the? 2.walked/mars/on/people/have? 3.the/has/changed/climate? 4.we/environment/the/have/protected? 5.pollution/trees/has/a lot of/destroyed? 6.stayed/the/has/same/world/the?

1.Have people travelled to the Moon?
2. Have people walked on Mars?
3. Has the climate changed?
4.Have we protected the environment?
5. Has trees destroyed a lot of pollution?
6. Has the world stayed the same?