How could you be so forgetful at the age of ten?

你才十岁怎么就这么健忘？

youdao

You shouldn't be so forgetful.

你不该这么忘记。

youdao

Also, we become forgetful during these periods, so be sure you have your cell phone, glasses, wallet, ID, and other things with you, as it would be easy to rush and leave things behind.

此外，我们在此期间成为健忘，所以要确保你有你的手机，眼镜，钱包，身份证，和其他的东西，因为它很容易把事情冲向后面。

youdao