It'sourd____toprotectourenvironment.Nomatterw____welive,wecandos_____tokeepourneighorhoodcleanandtidy.Wecanc_____wastethingsforr_____.Wesouldp_____moretrees.Wemustn't______inthesteet.Wemustni'tpicktheflowensors_____onthegrassinpublicplsces.Ife_____makesacontributiontoprotecttheenvironment,theworldwillbecomem____morebeauftiful.Andourlifewillbebetterandbetter.
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