The difference between speaking English and knowing the language professionally

There are many people who speak English, but only a few know how to use it correctly in a professional context. They may know the meaning of words, have a vast vocabulary and express what they want in a conversation with their foreign friends.
Learning a language in Covid times

According to a study conducted by the National Statistics and Geography Institute, close to 50% of the labor force in the Mexico City Metro Area requires more than 30 minutes to commute to work from their homes.
Professional development in the language

Languages, and particularly English, have become a fundamental tool in business and professional development in almost any area.