When the traffic lights are red, we _______ stop.
--- Is this your sister’s key, John? --- No, it isn’t. ______ is in the bag.
________ Dongtai you see today is _______ different city from what it used to be.
—When do you usually get up?—____________________.
—___________ he have to wear his school uniform every day?—No, he ______________.
—How old is Steve?—He is ____________ and he has an ___________ sister.