(이)나 means that one of the two or more listed nouns will be chosen.
Noun ending in vowel+나, Noun ending in consonant+이나
EX: 토요일이나 일요일에 운동해요. ( I exercise on Saturday or Sunday.)
산이나 바다에 가요.( I go to the mountain or sea.)
구두나 가방을 살 거예요. ( I plan to buy some shoes or a bag.)
- Read the passage and answer the questions. ( workbook page 143)