Answer:
Excited.
Step-by-step explanation:
Tim excited very much to go to school. In this sentence, the bold word 'excited' is second form of verb of a word 'excites' is used because in the simple past or past indefinite tense we can use second form of verb. If the tense is present indefinite or simple present we use the word of 'excites' so we put second form of verb according to the tense.