Books are a great source _______ happiness.
Books are a great source _______ happiness.
Explanation
The preposition “of” shows possession.
کتابیں خوشی ایک بہترین ذریعہ ہیں۔
Books are a great source of happiness
The preposition “of” shows possession.
کتابیں خوشی ایک بہترین ذریعہ ہیں۔
Books are a great source of happiness