Point to these things in your classroom. Use This is..., these are..., That is..., Those are... 1. books 2. pen 3. pencil case 4. posters 5. homework 6.
dictionaries 7. bag 8. Chair 9. desk 10. rubber

This is a pen.Those are dictionaries.This are desk.Правильно?

нет думаю that is desk -ведь desk -это ед. число, доска

this is pen, pencil case, homework, bag, chair, rubber. These are books, dictionaries. That is desk. Those are posters (может быть и эти можно с этим местоим.- dictionaries, books)

думаю так, точно не знаю

спасибо огромное

This-этот (близко лежит  предмет), ед.ч.That-тот (далеко предм), ед.чThese-эти (близко много предм), мн.ч.Those- те (далеко много предм) , мн.ч