So I am currently studying how the verb location particles (に,へ,で) work with the topic particles
(は and も) when the location of a sentence becomes the topic. I was given the following example:
ボブ:学校に⾏った?
アリス:⾏かなかった。
ボブ:図書館には?
アリス:図書館にも⾏かなかった。
Why is the topic particle は not needed in sentence one but instead needed in sentence three? Is the location not the topic in sentence 1?