rted languages see:
                        https://docs.microsoft.com/azure/cognitive-services/speech-service/supported-languages -->
                    <select id="languageOptions">
                        <option value="ar-EG">Arabic - EG</option>
                        <option value="ca-ES">Catalan - ES</option>
                        <option value="zh-CN">Chinese - CN</option>
                        <option value="zh-HK">Chinese - HK</option>
                        <option value="zh-TW">Chinese - 