Have you been to the Great Wall?－Perhaps not in my memory. _______ , it might have been during my early childhood.
Henry _____be at home because he phoned me from his office just now.
Do you go to school _____ seven thirty?[ ]
How far is it _____your home _____the centre of the city?[ ]
My good friend, Mike, wants to be a soldier when he grows up. —So ____ I. [ ]