1. Fill in "None" or "Unemployed": If you are unemployed or don't want to fill in the work unit, you can fill in "None" or "Unemployed" in the column of work unit.
2. Fill in other information: If you have other relevant experience or skills, you can fill in other information columns to show your professional ability and experience.
3. Consulting examination institutions: If you have any questions about the work units in the registration of the French examination, you can consult the relevant examination institutions or official website for more detailed information and suggestions.