Get out of here at once. _________ not, I’ll phone the police.
In China’s countryside, villagers often have the same family name, but _______ not be closely related.
______ makes the school proud is_______ most students have been admitted by the key universities.
Can you imagine what problem may ______ when human beings are cloned?
I’ll bring some medicine just _____ some of us get sick while travelling.
— Can I have a day off the day after tomorrow, sir?— _______. We can manage without you.