Final answer:
To change the underlined word to the past tense, replace 'have' with 'had'.
Step-by-step explanation:
The sentence, 'Noelle and Angelica have fun at school yesterday' is in present tense. To change the underlined word to the past tense, we need to use the past tense form of the verb. In this case, the past tense of 'have' is 'had'.
So, the sentence in the past tense would be: 'Noelle and Angelica had fun at school yesterday.'
Learn more about The past tense of 'have'