✔ Horror of horrors.

Meaning: It is used to emphasise how bad a situation is.

Example: Hellen stood up to speak and- horror of horrors -realised Joseph had left his book behind.

✔ Do the job.

Meaning: To be effective or successful in doing what you want.

Example: The farmers have done a great job.

✔ keep the lid on something.

Meaning: To keep something secret or hidden.
Example:  James is keeping a lid on john.

Thanks for reading and learning.

Enjoy the day!

Ben.