How to brush your teeth? You should brush your teeth twice a day.

你怎样刷牙呢？每天你应该刷两次牙。

youdao

How often do you forget to brush your teeth?

想想看：你会经常想要不要去刷牙这个问题吗？

youdao

How do dentists recommend you to brush your teeth?

牙科医生是如何建议你刷牙的？

youdao

How do dentists recommend you to brush your teeth?

牙科医生是如何建议你刷牙的？

youdao