My first puzzle GA! (Hint added)

Hello! It's my first attempt of making puzzle. Is not so hard IMO. You have 3 days.

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Edit:
Ok, as many of you have problems with Q4, i'll give you aditional hint.

HINTS:
Q4: The answer is "A and B". words must be in correct order, so if it doesn't work, just swap "A" with "B", and maybe this will help.