The public transport system in Beijing is very good now, so there _____be any difficulty in traveling around the city.
I took ___for granted that he would believe in us.
___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?