—______ there is no water left on the earth? —I really don’t know.
3. That accident happened __________ a rainy night.
--- 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 ______________.