Réponse : Tout d'abord pour l'exercice 4:

1)Everyone should recycle their garbage as much as possible.

2)It' necessary that people are aware of the situation.

3)The associations of protection of the environnement can give advices to the consumers.

4)Don't throw this jean, it's still in good conditions.

Ensuite pour l'exercice 3:

1)You shloud use your car less: it would cause less carbon emissions.

2)You should not buy things you do not need just because they are cheap!

3)Coffee shop should stop using plastics straws.

4)Kids should not have so many presents at Christmas.

5)People should realise that they have to make efforts if they wants to preserve our planet.

Explications :

En espérant que c'est ce que tu attendais et que ce soit juste. Bonne journée