they are going to take part in a singing contest this afternoon.改为同义句
问题描述：
they are going to take part in a singing contest this afternoon.改为同义句
they [ ] take part in a singing contest this afternoon.
答
正确答案为：
They will take part in a singing contet this afternoon.
或
They are going to join a singing contest this afternoon.
今天下午他们要参加一个歌唱比赛.
^___^
如果对你有所帮助,请千万别忘记采纳哟!