---Is that Jack speaking? ---Sorry, he _______ in. He _______ back in half an hour.
—_________ do you come to school on weekdays?— By bike.
In China, people walk _________ the street.
—Where _____ you born ?—I _____ born in Taizhou.
I have _____ football. Would you like to play ______ football with me ?
-- Are these pens ? ---Yes, ______.