Don’t forget _________when you leave the classroom.
---There _____ anybody in the room. --- Why do you say so? --- Because the door is locked.
---What’s the weather often like in our home town in early spring?--- There is much __________ here and it’s often ___________.
--- It’s too cold. Would you mind the window? --- . But don’t do it now.
---You aren’t a stranger, are you? --- , don’t you remember me at the school gate ten minutes ago?
---I heard your grandpa used to be a teacher. --- Yes. He was a math teacher ________.