A) Nouns with the endings -ation/-ion, -ance/-ence, -ment, -ity, -ness often come from verbs or adjectives. Which do the words below come from? Check your guesses in the dictionary. advertisement cleverness correction decision difference entertainment entrance excitement friendliness happiness illness imagination importance invention operation permission possibility. presentation production reality sadness b) Make sentences with five of the nouns. I saw a very funny advertisement the other day.

a) advertisement - advertise, cleverness - clever, correction - correct, decision - decide, difference - differ, entertainment - entertain, entrance - enter, excitement - excite, friendliness - friendly, happiness - happy, illness - ill, imagination - imagine, importance - important, invention - invent, operation - operate, permission - permit, possibility - possible, presentation - present, production - produce, reality - real, sadness - sad. b) 1. The advertisement was very eye-catching. 2. Her cleverness impressed everyone in the class. 3. The correction of the mistake took a long time. 4. My decision to study abroad changed my life. 5. The difference between the two products was significant.