Demonstrative pronouns are used to point to specific things or people and indicate whether they are near or far in relation to the speaker. Here's how to complete the sentences:
This is my sister.
Those are my parents. (Corrected: 'that' -> 'those')
That is my cat.
Those are my books. (Corrected: 'there' -> 'those')
That is Mary's house.
Those are my brother's boots.
These are Sophia's classmates.
This is my school.
That is Anna's hat.
These are your trousers.
This is his bag.
Those are their children. (Corrected: 'there' -> 'those')
These are her apples.
This is our car.
That is my teacher.
Interrogative pronouns are words used to ask questions, like 'what', 'which', 'who', 'whom', and 'whose'. Here’s how to complete the sentences:
Who came early to class?
Whose is your backpack?
What is your teacher's name? (Corrected: 'Whose' -> 'What')
Whose umbrella is this? (Corrected: 'Where' -> 'Whose')
Whom did you ask for directions?
Who is your best friend?
Which is your favorite book?
Whose pencil is this?
Whom did you meet at the party?
In these exercises, choosing the correct demonstrative or interrogative pronoun allows you to construct clear and meaningful sentences.