Im the blackboard. Plase ... dont go ... there. Are you putting that cup ... the table? Im putting it ... here.

I’m at the blackboard. Please, don’t go there. Are you putting that cup on the table? I’m putting it here.

I was at the blackboard. Were you putting that cup on the table? I was putting it here.

I’m not at the blackboard. Please, go there. Are you not putting that cup on the table? I’m not putting it here.