brush your teeth before you go to bed

Please brush your teeth t_______ a day. outside brush teeth the surface of your You should brush your teeth twice a day.对brush your teeth brush your biting surface of your teeth怎么解释 How often do you brush your teeth?回答 You need to brush your teeth after ()为什么 How often do you brush your teeth?答语 How often do you brush your teeth in a day Brush your teeth ,Tim.要改为否定句 brush your teeth before you go to bed Brush your teeth before you go to bed.(翻译） ____ you _____ (brush) your teeth every morning. You should brush your teeth after meals every day. you brush your teeth every day.(用may替换you) you,the,should,your,of,surface,brush,teeth(.) Don't brush your teeth under a running tap意思 you should brush your teeth (twice) a day.提问 Brush the outside surface of your teeth.的意思．