括号里应添什么:3.please brush your teacher often leave the school very late.写错了,是3.please brush your teeth ( )you go to bed.

问题描述:

括号里应添什么:3.please brush your teacher often leave the school very late.
写错了,是3.please brush your teeth ( )you go to bed.

3.please brush your teeth ( before 在..之前 )you go to bed.

您的括号呢

before