Bonjour
1- On va le lire.
near future => you must write the pronoun just before the main verb . "va" = "aller" is used only to form the near future...
2- Mon cahier y est.
"y" replaces a place; ==> "sur la table"
3- Elles vont y aller.
y replaces "Allemagne", the place where they are going to go. near future. So the pronoun has to be before the main verb. "aller"
4- Vous vous sentez seuls.
pronominal verb
je me, tu te, il/elle/ on se , nous nous, vous vous, ils/elles se
5- Elle aime en manger.
the pronoun "en" replace a quantity, something.. ==> "du gâteau"
hope this helps ☺☺☺