Answer:
''The adverb phrase in one year modifies the words will graduate.''
Step-by-step explanation:
An Adverb Phrase tells how, when, where, why, or to what extent e.g. "I went to town to visit my friend" What is the verb? the verb is went. Why was she going? to visit her friend. So, to visit my friend was the adverb phrase and went was the verb.