I have been writing for 2 hours.
Sue has been writing her homework since 3 PM.
We have been writing an essay about debating since she came back home.
He hasn't been writing his homework for a very long time.
Have you been writing your essay?
We are writing the homework.
Helen is not writing now.
He is writing a message to his girlfriend.
Is Jack writing the essay?
I am writing my homework at the moment.
