Which of the “Effective Listening Strategies” do you need to improve on?

What english word has three consecutive double letters?

Ecoul il mana catre pestera purpurie dintre dealuri,trezind din vise pastratori adormiti. pluti apoi printre trestiile raului,si trestiile ii dusera solia catre apele marii." (oscar wilde,printul fericit) •analizeaza atributele adjectivale si substantivale si enuntul urmator,completand tabelul dat: |tipuri de atribut| |partea de vorbire| |cazul| multumesc,anticipat.

What is the longest word in the world? this is grammar.