![](https://cos-cdn.shuashuati.com/pipixue-web/2020-1231-2005-12/ti_inject-812ce.png)
Complete the sentence with word below.从下列单词中选择合适的一个填空(答案中填写单词) 1.first come, first served 2.delegates 3.simultaneous translation system 4. pre-register 5.peninsula booth Before coming to a convention, people are supposed to __________ to be the attendee.