Fill in the Blanks Reading act unit 6Online version Fill in the blanks with the correct words from the right by Armando Jacobo 1 have don't can't must must don't In order to take care of the environment , we to be smart and have in mind that it is really important for our lives . People respect nature , cleaning streets , planting trees , etc . Also , we have to throw garbage everywhere because it pollutes the air we breath everyday . It is really important not to do it because we survive without a clean environment . Global warming has been increasing because of the contamination people provoke . We protect natural hábitats because animals are being affected too . we have to avoid thinking of animals because they are part of our lives .