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<h3>Lựa chọn đồ uống:</h3>
<form>

  <input type="checkbox" id="douong1" name="douong1" value="cafe">

  <label for="douong1"> cafe</label><br>

  <input type="checkbox" id="douong2" name="douong2" value="trà">

  <label for="douong2"> trà</label><br>

  <input type="checkbox" id="douong3" name="douong3" value="nước cam">

  <label for="douong3"> nước cam</label>

</form>

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