Grade 5 English worksheet focusing on apostrophes, with examples and practice sentences for students to rewrite using correct apostrophe usage.

Problem Overview:

The task involves rewriting sentences using appropriate apostrophes to show possession. The rules for using apostrophes are as follows:
1. To show possession of a noun:
- Add 's to the singular form of the word (even if it ends in -s).
- Example: "teacher's house," "Alexis's toys."
- For joint possession, add 's to the last noun.
- Example: "Stella and Anita's school."
2. To show the omission of letters: This is not relevant to the given sentences.

Solution:

#### Sentence 1:
Original: This is the book of the boy.
Rewritten: This is the boy's book.
- Explanation: The book belongs to the boy, so we use 's to show possession.

#### Sentence 2:
Original: We are at the restaurant in the mall.
Rewritten: We are at the mall's restaurant.
- Explanation: The restaurant belongs to the mall, so we use 's to show possession.

#### Sentence 3:
Original: She is the daughter of Mrs. Brown.
Rewritten: She is Mrs. Brown's daughter.
- Explanation: The daughter belongs to Mrs. Brown, so we use 's to show possession.

#### Sentence 4:
Original: This is the school of Mia and Maria.
Rewritten: This is Mia and Maria's school.
- Explanation: The school is jointly owned by Mia and Maria, so we add 's to the last noun (Maria).

#### Sentence 5:
Original: Please open the refrigerator door.
Rewritten: Please open the refrigerator's door.
- Explanation: The door belongs to the refrigerator, so we use 's to show possession.

#### Sentence 6:
Original: The leaves of the tree are brown.
Rewritten: The tree's leaves are brown.
- Explanation: The leaves belong to the tree, so we use 's to show possession.

#### Sentence 7:
Original: The parking in the mall is quite weird.
Rewritten: The mall's parking is quite weird.
- Explanation: The parking belongs to the mall, so we use 's to show possession.

Final Answer:

1. This is the boy's book.
2. We are at the mall's restaurant.
3. She is Mrs. Brown's daughter.
4. This is Mia and Maria's school.
5. Please open the refrigerator's door.
6. The tree's leaves are brown.
7. The mall's parking is quite weird.

Boxed Final Answer:
\[
\boxed{
\begin{aligned}
1. & \text{ This is the boy's book.} \\
2. & \text{ We are at the mall's restaurant.} \\
3. & \text{ She is Mrs. Brown's daughter.} \\
4. & \text{ This is Mia and Maria's school.} \\
5. & \text{ Please open the refrigerator's door.} \\
6. & \text{ The tree's leaves are brown.} \\
7. & \text{ The mall's parking is quite weird.}
\end{aligned}
}
\]