new event >>
(1)event comand: control variables
select 'random'. if you have 5 questions, set it 1 ~5.
save it to some variable- say, var[001]: rand question.
(2)conditional branch >> variable >> var[001]: rand question
equal to >> 1
( show text- 1st question +show choices (answers). if wrong: 'change HP' comand)
(3)same thing, for question 2-5.
(4)finish: erase event/ whatever you want to happen next.