Use every pair of homophones in a sentence:
1.principle-principal
2.aisle-isle
3.lesson-lessen
4.idol-idle
5.vein-vain

1. The school's principal said that the school must follow certain principles in order to be at its best.
 
2. The groom wanted to have their wedding on an isle, while the bride didn't really care where it took place, she simply wanted to walk down the aisle and get married. 

3. In class today, we're going to gave a lesson on how to lessen our expenses. 

4. The idle man simply sat there lazily as he stared at a poster of his idol, Michael Jackson. 

5. She was so vain, she wanted to look perfect, but a huge vein in the middle of her forehead was getting in the way. 

Some shorter sentences
1. The principal set up principles for the students.

2. I arrived at the isle and went straight to the store in the cookie aisle.

3. She lessened the amount of the lessons she taught.

4. The boss was an idol to the idle associate.

5. He screamed out in vain as the needle went in his vein.