This problem is a piece of cake for me.

This problem is a piece of cake.

He put the book away on the shelf.

He passed the graduation examination.

We will conduct a practical test of the new product next week.

There is a mock exam next week.

He passed the bar examination.

I have an oral examination tomorrow.

His opinion is our litmus test.

He practiced the proverb 'to keep a secret when asked about it' in order to protect the secret.