HELP ME PLEASE!!! answer me please

Answer:
1. Singular
2. Plural
3. Plural
4. Plural
5. Singular
6. Plural
7. Plural
8. Singular
Explanation:
This, that, these and those are demonstratives. We use this, that, these and those to point to people and things. This and that are singular. These and those are plural. We use them as determiners and pronouns.