In this task you are given a sentence with one coordinating conjunction (for, and, nor, but, or, yet, and so). You must judge whether the order of two coordinated clausal conjoints have been inverted or not. Inversion would result in the sentence sounding unnatural. Label the instances as "Original" or "Inversion" based on your judgment.

It took all of her concentration to remember all the flight checks before take-off , but the instructor coached her .
Original

The doorbell rang and she went to answer it .
Original

It kept advancing toward him and Saliva dripped from its mouth .

Inversion