Complete the roommate's desperate defense in the Great Pizza Trial by selecting the grammatically correct phrase.

"I am completely innocent! I _____ the last slice of pepperoni pizza. I was asleep!"

The correct answer is didn't eat.

To make a negative sentence in the Past Simple tense, we use didn't (did not) followed by the base form of the verb (eat). We never use the past tense form of the main verb (ate) after "didn't."