Questions & Answers about Il quaderno e la penna sono lì, ma lo zaino è pieno.
Why do we say lo zaino for "the backpack" instead of il zaino?
Why are there two different words for "to be" (sono and è) in the same sentence?
Why does the word lì have an accent mark?
The accent mark on lì (meaning "there") shows where your voice should put the stress. It is also very important for spelling because it tells this word apart from li, a completely different word that means "them".
Why does pieno end in an "o"? Would it change if the pen was full?