<form>
?? <label for="male">慢跑</label>
? <input type="checkbox" name="gender" id="male" />
? <br />
? <label for="female">登山</label>
? <input type="checkbox" name="gender" id="female" />
? <br />
? <label for="email">籃球</label>
? <input type="checkbox" name="basktball" id="email" >
? <br>
? <input type="submit" name="submit" value="提交" >
</form>