it is quite a revelation/was revealed/

[vil]

Dear teachers,

Would you be kind enough to tell me whether I am right with my interpretation of the expressions in bold in the following sentences?

1. It is quite a revelatuion, I never knew he played the piano so well.

It is quite a revelation = It is a sensational disclosure = Well, that’s news.

2. This was revealed in a latter written some time ago.

was revealed = was disclosed = came to light

3. He didn’t reveal his feelings.

reveal = disclose = show

4. The truth was revealed quite by accident.

was revealed = was disclosed

5. She revealed the secrets to us.

revealed = disclosed

6. He revealed to us that he had been ill for years.

7. The document revealed her to be a conscious employee.

8. Why don't you reveal your thoughts to me?

9. Drawing back the curtain, they revealed the sleeping newly-married couple.

Thank you for your efforts.

Regards,

V.

[Tdol]

I feel 'sensational' might be a bit strong in the first.