How do you know if something is plural? If I put "apples and pencils" it would be marked wrong. I remember reading that often times the plural indicator 들 is omitted due to context clues, but this phrase offers no context. Help?
if theres no context, with lessons at least, i always assume singular, but if its a sentence like 사과와 연필 물건입니다 (apples and pencils are things/an apple and a pencil are things) its usually more of a general statement rather than specific