Meaning: knowing the basics building blocks of something. As easy as ABC means that something is extremely simple.

Example Sentences:
1.- Before you can become a doctor, you need to know the ABC of science.
2.- Can you just give me the ABC of this book before I start working on the paper? I need to know what I am writing about.

Meaning: It means to cause an upheaval. A commotion which possibly ends in anger and frustration.

Example Sentences:
When the auditor asked for more evidences, the treasury department stirred up a Hornet’s nest because they did not have more. This is how the fraud was actually revealed.

Meaning: indicates determination to achieve something. Used after a statement of intent to do something.

Example Sentences:
1.- I am going to get this house cleaned today if it’s the last thing I do.
2.- I am going to learn to play the guitar if it’s the last thing I do.