The students are going to take part in a contest,___?

问题描述:

The students are going to take part in a contest,___?

aren't they?谢谢您的帮助!这是个单选题,选项有aren't they 可答案给的won't they? 是否都可以呢?为什么?are going to do 一般指将来发生某事,所以wont they也可以