as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
system
identify the correct verb tense to replace the underlined words in the following sentence:

he has been reading the book for the past two hours.
user
he has been reading the book for the past two hours.
assistant