【答案解析】[听力原文] 74-76 The new recreation center is nearing completion. It is scheduled to be finished on Friday, August 24, and it will open to all. employees starting the following Monday. We hope you will enjoy this new facility. However, in order to use the center, you must fill out the recreational ID card form. After you submit this form to the activities director, your recreational ID card will arrive in one week. In order to have your ID card in time for the opening, the form must be completed by next Monday. Your regular employee ID card cannot be used. Please see the employee website for a copy of the form. Thank you.
单选题
What do employees need in order to use the center?