The teacher is writing ____ a piece of chalk on the blackboard while the students are writing ____ink in exercise books.
—— ____ your clothes? ——No, mine _____ hanging over there.
In those days John with his classmates _____ kept busy preparing for the exam.
As I have a meeting at four, ten minutes _____ all that I can spare to talk with you.
The writer and singer ______ here.
. No teacher and no student ______.