\documentclass[11pt]{article}
\usepackage[paperheight=13in,paperwidth=8in]{geometry}
\usepackage{fullpage}
\usepackage[utf8x]{inputenc}    
\usepackage[T1]{fontenc}
\usepackage{multicol}

\usepackage[box,completemulti,separateanswersheet]{automultiplechoice}    
\begin{document}

\AMCrandomseed{1237893}

\def\AMCformQuestion#1{\vspace{\AMCformVSpace}\par {\sc #1:} }    

\element{general}{
  \begin{question}{prez}    
    Among the following persons, which one has ever been a President of the French Republic?
\begin{multicols}{2}   
    \begin{choices}
      \correctchoice{René Coty}
      \wrongchoice{Alain Prost}
      \wrongchoice{Marcel Proust}
      \wrongchoice{Claude Monet}
      \end{choices}
    \end{multicols}
  \end{question}
}

\element{general}{
  \begin{questionmult}{pref}    
    Among the following cities, which ones are french prefectures?
   \begin{multicols}{2}
    \begin{choices}
       \correctchoice{Poitiers}
      \wrongchoice{Sainte-Menehould}
      \correctchoice{Avignon}
    \end{choices}
  \end{multicols}  
  \end{questionmult}
}

\element{general}{
  \begin{question}{nb-ue}
    How many different states were members of the European Union in Jan. 2009?
    \begin{choiceshoriz}[o]
      \wrongchoice{15}
      \wrongchoice{21}
      \wrongchoice{25}
      \correctchoice{27}
      \wrongchoice{31}
    \end{choiceshoriz}
  \end{question}
}

\element{general}{
\begin{question}{open}
  Define \emph{inflation}.
  \AMCOpen{lines=3}{\wrongchoice[W]{w}\scoring{0}\wrongchoice[P]{p}\scoring{1}\correctchoice[C]{c}\scoring{2}}
\end{question}}


\onecopy{15}    {


%%% beginning of the test sheet header:    
\vspace*{.5cm}
\begin{minipage}{.9\linewidth}
  \centering\large\bf Science Examination\\ Chapter 26 - Digestion
\end{minipage}

\begin{center}\em
Duration : 60 minutes.

  Questions using the sign \multiSymbole{} may have
  zero, one or several correct answers.  Other questions have a single correct answer.

  \emph{\textbf{Negative points}} may be attributed to \emph{very
    bad} answers.

\end{center}
\vspace{1ex}

%%% end of the header

\shufflegroup{general}
\insertgroup{general}

\clearpage    
\begin{center}
{\Large {\bf Answer sheet:}}
\end{center}
\paragraph{}
\AMCformBegin    

{\setlength{\parindent}{0pt}\hspace*{\fill}\AMCcode{studentid}{5}\hspace*{\fill}
\begin{minipage}[b]{6.5cm}
$\longleftarrow{}$\hspace{0pt plus 1cm} Please fill in your student number to the left, and write your first and last names below.

\vspace{3ex}

\hfill\namefield{\fbox{    
    \begin{minipage}{.9\linewidth}
      {\large {\bf Student name:}}
      
      \vspace*{.5cm}\dotfill
      
      \vspace*{.5cm}\dotfill
      \vspace*{1mm}
    \end{minipage}
  }}\hfill\vspace{5ex}\end{minipage}\hspace*{\fill}

}
%%% beginning of the answer sheet header



\begin{center}
  \bf\em Fill in the correct option(s) completely!
\end{center}

%%% end of the answer sheet header
\begin{multicols}{3}
   \AMCform    
\end{multicols}
\clearpage    
}
\end{document}