学校邮件是这么说的:If you are graduating international students and still holding the Student’s Pass, please note that you need to cancel your Student’s Pass within 7 days from the date of this email. Upon the cancellation of your Student’s Pass, you may request the Immigration & Checkpoints Authority to issue you with a Short Term Visit Pass (if necessary) to stay in Singapore for up to 89 days."If you don’t intend to apply for LTVP, you may choose to cancel off your Student’s Pass anytime from now, but latest by 28 July after your commencement ceremony. “ Important: Please ensure thatyou have a valid pass while waiting for the LTVP to be approved. If yourStudent's Pass is expiring or if you graduate prior to obtaining the LTVP, you MUSTapply for a Short Term Visit Pass in the interim我的签证8月才到期,这句话的意思我不太理解,我的签证未到期,但是已经GRADUATE了,一定申请短期签证吗?