"Today we make them with other tools."
Translation:Dnes je vyrábíme jinými nástroji.
Okay I understand. Is there a site you can recommend for a list of clitics?
why is the preposition 's' required here? It is not in the other sentences with vyrabet.
The preposition is not included in the main translation above. Perhaps your answer was sufficiently different from what DL expected that it gave you a "correction" that was more in line with what you wrote. When you have a question about something weird like this, it's helpful to the Czech team if you paste your actual answer into your comment.