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.
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
they will take part in a singing contest this afternoon.
答
They will join/be 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.
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