---Mary,turn off the water__you are brushing your teeth.---Sorry.I will do it at once.A、until B、while C、though D、but

分类: 作业答案 • 2022-02-17 20:08:44

问题描述：

---Mary,turn off the water__you are brushing your teeth.
---Sorry.I will do it at once.
A、until B、while C、though D、but

答

B 表示正在,同时