-- __ behind the door? --No, they aren't.
The teachers ________________ the office for a few minutes when we arrived.
——Would you mind my opening the window? ——__________.
—— He didn’t catch the train, did he? ——__________, though he was caught in the rain.
—— Is Jim at home by himself? —— No, there is another boy __________ with him.
—— Where is your father? —— He has gone to the supermarket. He __________ at home.