The boys clean the classroom on Fridays.(改为现在进行时)The boys _____ _____the classroom now.

问题描述:

The boys clean the classroom on Fridays.(改为现在进行时)The boys _____ _____the classroom now.

The boys clean the classroom on Fridays. (改为现在进行时):
The boys are cleaning the classroom now. 
这群男孩正在打扫教室.