jiètú lǐ yǒu shíjiān hé wénjiàn míng dàjiā dōu néng quèrèn bùshì wǒ yǐwéi tíjiāo le

截图里有时间和文件名，大家都能确认不是“我以为提交了”。

The screenshot has the time and file name, so everyone can confirm that it's not 'I thought I submitted it'.