Educational worksheet teaching singular and plural possessive nouns with examples and exercises.

Problem Overview:

The task involves filling in the blanks with the correct possessive noun and a common noun for each sentence. The goal is to practice using singular and plural possessive nouns correctly.

Solution:

#### Step-by-Step Explanation:

1. Sentence 1:
- Original: "There is one shark. Its teeth are sharp."
- Possessive noun: "shark's"
- Common noun: "teeth"
- Filled-in sentence: "The shark's teeth are sharp."

2. Sentence 2:
- Original: "There are two spiders. Their webs catch insects."
- Possessive noun: "spiders'"
- Common noun: "webs"
- Filled-in sentence: "The spiders' webs catch insects."

3. Sentence 3:
- Original: "There are six lizards. Their tails have stripes."
- Possessive noun: "lizards'"
- Common noun: "tails"
- Filled-in sentence: "The lizards' tails have stripes."

4. Sentence 4:
- Original: "There is one pig. Its tail is curly."
- Possessive noun: "pig's"
- Common noun: "tail"
- Filled-in sentence: "The pig's tail is curly."

5. Sentence 5:
- Original: "There are two bears. Their fur keeps them warm."
- Possessive noun: "bears'"
- Common noun: "fur"
- Filled-in sentence: "The bears' fur keeps them warm."

6. Sentence 6:
- Original: "There is one giraffe. Its baby is called a calf."
- Possessive noun: "giraffe's"
- Common noun: "baby"
- Filled-in sentence: "The giraffe's baby is called a calf."

Final Answer:

1. The shark's teeth are sharp.
2. The spiders' webs catch insects.
3. The lizards' tails have stripes.
4. The pig's tail is curly.
5. The bears' fur keeps them warm.
6. The giraffe's baby is called a calf.

Boxed Final Answer:
\[
\boxed{
\begin{array}{l}
1. \text{The shark's teeth are sharp.} \\
2. \text{The spiders' webs catch insects.} \\
3. \text{The lizards' tails have stripes.} \\
4. \text{The pig's tail is curly.} \\
5. \text{The bears' fur keeps them warm.} \\
6. \text{The giraffe's baby is called a calf.}
\end{array}
}
\]