信里是这么写的:Congratulations on your admission to WPI! We have attached a copy of your admission letter to this e-mail. To respond to our offer, please login to the webpage for admitted students: http://www.wpi.edu/ as instructed in your admission letter.
附件是个pdf,里面说to accept this offer of admission, please somplete the XXXform. We would appreciate hearing from you at your earliest convenience before April 15, 2014. 是不是只要在4.15前给回复就可以了?