Complete with ‘s (possessive), ‘s (is), s (plural / third person s), or -

1. Mary's cat is very fluffy. (possessive)
Explanation: The sentence is stating that the cat belongs to Mary. To show possession, we use the apostrophe+s ('s) after the name of the possessor.

2. The cat's tail is long. (possessive)
Explanation: Here, we are talking about the tail of the cat. Again, to show possession, we use the apostrophe+s ('s) after the noun (cat).

3. The dog is running. (is)
Explanation: The sentence is describing the action of the dog. We use 's after the noun (dog) when we want to show ownership, but here we are simply stating what the dog is doing. Therefore, we use 's as a contraction of "is."

4. The dogs are barking. (plural / third person s)
Explanation: In this sentence, we are referring to multiple dogs and their action. To indicate plurality and third person, we add just the letter "s" after the noun (dogs).

5. The teacher is talking to the students. (is)
Explanation: Here, we are describing what the teacher is doing. Again, we use 's as a contraction of "is."

6. The students' backpacks are heavy. (possessive)
Explanation: The sentence is stating that the backpacks belong to the students. Since we are showing possession, we use the apostrophe+s ('s) after the noun (students).

7. The bird is singing. (is)
Explanation: We are simply stating what the bird is doing. Therefore, 's is used as a contraction of "is."

8. The birds are chirping. (plural / third person s)
Explanation: This sentence is referring to multiple birds and their action. To indicate plurality and third person, we add just the letter "s" after the noun (birds).

9. Sarah's book is on the table. (possessive)
Explanation: The sentence is stating that the book belongs to Sarah. To show possession, we use the apostrophe+s ('s) after the name of the possessor.

10. The book's cover is torn. (possessive)
Explanation: Here, we are talking about the cover of the book. Again, to show possession, we use the apostrophe+s ('s) after the noun (book).

11. The horse is galloping. (is)
Explanation: We are describing what the horse is doing. Therefore, 's is used as a contraction of "is."

12. The horses are grazing. (plural / third person s)
Explanation: This sentence is referring to multiple horses and their action. To indicate plurality and third person, we add just the letter "s" after the noun (horses).