如果他们选择外语单选按钮，我想让我的 2 个选择框成为必需，这样他们就可以选择他们想要的语言以及在哪个级别不确定如何完成此操作
<label for"artlang"=""> Fine Arts or Language: </label><br>
<input name="ArtLang" type="radio" value="Art150" required>Art 150<br>
<input name="ArtLang" type="radio" value="Mus150"required>Music 150 <br>
<input name="ArtLang" type="radio" value="Lang"required>Foreign Language
<label for="language">Language: </label>
<select name="language">
<option name"="" "="" value=" "> </option>
<option name="chinese" value="chinese">Chinese</option>
<option name="french" value="french">French</option>
<option name="german" value="german">German</option>
<option name="greek" value="greek">Greek</option>
<option name="italian" value="italian">Italian</option>
<option name="japanese" value="japanese">Japanese</option>
<option name="latin" value="latin">Latin</option>
<option name="russian" value="russian">Russian</option>
<option name="spanish" value="spanish">Spanish</option>
</select>
<label for="languagelevel">Level: </label>
<select name="languagelevel">
<option name"="" "="" value=" "> </option>
<option name="Elementary" value="elementary">Elementary</option>
<option name="intermediate" value="intermediate">Intermediate</option>
<option name="advanced" value="advanced">Advanced</option>
</select>