“I think the teacher is wrong, _____?”“No, I don't think so.”
___used to be thought that the earth was square.
—— Where ________? —— I got stuck in the heavy traffic, or I_____here earlier.
They must have been here the day before yesterday,____?
Mr Bush is on time for everything. How___it be that he was late for the opening ceremony?
Iyou a beautiful present for your birthday,but I was short of money at that time.