Oi!! As frases completas ficam assim:
OBS: coloquei em negrito os must‘s e mustn’t’s. Bons estudos!
We must plant a lot of trees!
We mustn’t throw garbage on the streets!
We must walk or ride our bikes.
We mustn’t drive our cars very often!
We must save water!
We mustn’t throw garbage in the rivers!
We must plant a lot of flowers!
We must build a lot of parks!
We must throw our garbage in the bin!
We must stop big factories!
We must save our planet.
