Select the most appropriate pair of homonyms to fill in the blanks.

The students placed ________ backpacks over ________ outside the classroom before sitting for the exam.

Key Points

• The students placed their backpacks over there outside the classroom before sitting for the exam.
• The word "their" is a possessive pronoun indicating ownership, while "there" refers to a place.
• Option 3 ("their; there") correctly fills in the blanks with the appropriate words.

​Therefore, the correct answer is 'Option 3'.

Additional Information

• Option 1 (there; there): Both instances use "there" indicating place, which is incorrect.
• Option 2 (their; their): Both instances use "their" indicating possession, which is incorrect.
• Option 4 (there; their): The order is incorrect for the context of the sentence.