Articles, a, an or the?

Choose the correct answer.

She was _____ honest person.
I saw _____ very beautiful dress on the mannequin.
What is _____ capital of France?
He had _____ unique idea for the project.
February is _____ second month of the year.
She had _____ opportunity to go to space.
They drank _____ cup of coffee each.
She has _____ egg for breakfast every day.
I bought a new phone; _____ phone is rose gold.
Cheetahs can run 60 miles _____hour.