1> To my great______ I didn't get the letter from her ( disappoint ) 2> We are talking about the preservation of ______ resources ( nature ) 3> This organization concerned about the ________ of the rain forests ( destroy ) 4> This group concerned about the _______ of the natural environment ( conserve ) 5> ________, these innovations will conserve the Earth's resources ( ultimate ) 6> We should end the letter ____ with the words " Sincerely yours " ( polite ) 7> He is one of the most famous _____ in the world ( environment ) 8> If we go on littering, the environment will become _____ polluted ( serious ) 9> The inhabitants have made ________ on how to protect the environment ( suggest ) 10> If the _______ continues, there will be no forest left ten years from now ( forest ) GIẢI NHANH GIÙM EM VS Ạ EM SẼ CHO 5* VÀ CÂU TLHN