The teacher is busy ____ correcting papers.
You _____ be tired; you have been working for so long a time,but he _____ be tired; he has just begun to work.
The meeting _____ late in the afternoon and we all went home.
As soon as he comes back, I’ll tell him when _____ and see him.
The road in front of our school is _____ and is closed to all the cars.
—Could I use your computer for a few moments, please? —______. I’m not using it myself.