1. Who is cleaning the blackboard now?
2. What are you cleaning now?
3. What are you doing now?
4. When are you cleaning the blackboard?
5. What are you doing with the blackboard now?
1. Who is cleaning the blackboard now?
2. What are you cleaning now?
3. What are you doing now?
4. When are you cleaning the blackboard?
5. What are you doing with the blackboard now?