[NTG-context] Making exams in Context

[Jorge Manuel de Almeida Magalhães]

I need to prepare an exam. My choice is obviously ContexT, but
I have some difficulty in generating multiple choice questions in 
random order.
  Each student will have one different exam.
In Latex I use MUCH (http://fourier.math.uoc.gr/~mk/much/). Did you can 
tell me if it has a similar
solution in ConTexT?

Thanks

Jorge