<form>

  <label>你对什么运动感兴趣</label>

  <br />

   <label for="foot">慢跑</label>

  <input type="checkbox" name="play1" id="foot" />

  <br />

  <label for="mountain">登山</label>

  <input type="checkbox" name="play2" id="mountain" />

  <br />

  <label for="ball">篮球</label>

  <input type="checkbox" name="play3" id="ball">

</form>