bootstrap modal and chosen

HTML

<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css" rel="stylesheet">

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>

<script src="https://cdnjs.cloudflare.com/ajax/libs/chosen/1.4.2/chosen.jquery.min.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/chosen/1.4.2/chosen.min.css">
    
<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
      `enter code here`<div class="modal-dialog">
        <div class="modal-content">
          <div class="modal-header">
            <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
            <h4 class="modal-title" id="myModalLabel">Add Group</h4>
          </div>


    <div class="modal-body">
        <div class="form-group"><label>Class name</label> <input type="name" placeholder="Choose a name for your group" class="form-control"></div>

<div class="form-group"><label>Class name</label> <input type="desc" placeholder="Add a description for your group" class="form-control"></div>

    <div class="form-group">
                    <label class="font-noraml">Select</label>
                    <div class="input-group">
                    <select data-placeholder="Select a grade..." class="chosen-select" style="width:350px;" tabindex="2">
                    <option value="">Select</option>
                    <option value="Prekindergarten">Prekindergarten</option>
                    <option value="Kindergarten">Kindergarten</option>
                    <option value="1st">1st</option>
                    <option value="2nd">2nd</option>
                    <option value="3rd">3rd</option>
                    <option value="4th">4th</option>
                    <option...

JavaScript

$(document).ready(function(){
	$("#myModal").modal('show');
});