busy反义词不是spare，是freeI havefreed time for tomorrow's appointment.我已经为明天的约会腾出了时间。

She's finally living afreelife.她终于过上了自由自在的生活。We provide snacks for every visitorfree.我们为每位游客免费提供小吃。I make a lot of cakes in myfreetime.我空闲时间做很多蛋糕。Are youfreeon Friday 你周五有时间吗？They gave her afreeupgrade because she's a loyal customer.他们给她免费升了舱，因为她是忠诚顾客。I'mbusychecking up on the attendees of the meeting.我正忙于核对会议的与会人员。