I was going to let you know I posted a reply to your question at the bottom. On the #4 when you said I needed aller+ infintive which word needs that I don't understand what you mean.
In other words, after any form of the verb "aller" the next word, if it is a verb, must be an infinitive:
je vais étudier
tu vas apprendre
il/elle/on va aller
Nous allons voir
vous allez comprendre
ils/elles vont répondre
I'm going TO STUDY (infinitive in English)
you are going TO LEARN
he/she/one is going TO GO
we are going TO SEE
you are going TO UNDERSTAND
they are going TO ANSWER
Hopefully that cleared that up for you?
Sra (aka Mme)