—Look at the girl! Is it Susan? —No, it __________ be her. She has gone back to her hometown.
A: May I go out to play football, Dad? B: No, you ________. You must finish your homework first.
In China when the traffic light is red, you ________ cross the road.
Bring a map of China because you _______ want to travel around.
What ______ at seven yesterday morning?
My teacher is an interesting man, his words made everyone _________.