It's probably worth mentioning that "these" and "those" follow the same logic as "this" and "that". *'These'* _Is the plural form of 'this'._ *'Those'* _Is the plural form of 'that'._
Thank you very much. Indeed, you are the best I have seen in teaching the language and communicating it in an attractive way. Can you start from 0 so that the benefit spreads to non-English speakers?