1.   It is a denial of democracy to keep smears secret.

2.   It was impossible for the affair to be kept secret.

3.   It will be a complete change to report these facts instead of keeping them secret.

4.   No one knows how big the contribution was and the price paid for the electricity is being kept secret.

5.   Some politicians are so embarrassed by their contributors, they try to keep them secret.

6.   The plan, for obvious reasons, was being kept secret.

7.   The private key, used to encrypt transmitted information by the user, is kept secret.

8.   The public key is used to Decrypt information at the receiver and is not kept secret.

9.   The relationship was not kept secret from her supervisors.