<form>
  <label for="douong">Đồ uống:</label>

  <select id="douong" name="douong" size="3" multiple>

    <option value="cafe">Cafe</option>

    <option value="nuoccam">Nước cam</option>

    <option value="nuocle">Nước lê</option>

    <option value="trada">Trà đá</option>

  </select>
</form>

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