Question

correct the text by inserting a comma or commas. uh - oh this toothache is getting worse, but i dont know when i can fit in a dentist appointment.

Explanation:

"Uh-oh" is an interjection at the start of the sentence, so it needs a comma after it to separate it from the main clause.

Answer:

Uh-oh, this toothache is getting worse, but I don't know when I can fit in a dentist appointment.