Underline the abstract nouns in the following sentences:

Here are the abstract nouns underlined in each sentence:

1. Nurjahan was famous for her $\underline{\text{beauty}}$.
2. The $\underline{\text{price}}$ of this book is very heavy.
3. I found her $\underline{\text{advice}}$ very useful.
4. $\underline{\text{Knowledge}}$ is $\underline{\text{power}}$.
5. We should give $\underline{\text{importance}}$ to $\underline{\text{cleanliness}}$.
6. He was very naughty in his $\underline{\text{childhood}}$.
7. India got $\underline{\text{freedom}}$ on 15 August, 1947.
8. I followed the $\underline{\text{advice}}$ of my mother.
9. She has a huge collection of stamps.
10. $\underline{\text{Practice}}$ gives $\underline{\text{perfection}}$.
11. His speech was inspiring.
12. William Shakespeare was known for his $\underline{\text{wisdom}}$.