Rewrite the sentences using different prepositions and phrases for "because of".

Original: "The book is on the shelf."
The student's attempt "The book is in the shelf" is incorrect as "in" implies inside, not resting on a surface. A suitable alternative preposition for "on" in this context is "upon".

• Rewritten: The book is upon the shelf.

Original: "He left because of the rain."
The phrase "because of" indicates a reason. A common alternative phrase with the same meaning is "on account of".

• Rewritten: He left on account of the rain.