You’d better give up using that kind of medicine, because it may be______ to your stomach.
_____ leaves the room last ought to turn off the lights.
You can’t imagine ______ when they received these nice Christmas presents.
My new pen ______. Who ______ have taken it?
— David hasn’t come yet. —I think he will ______ soon, for he means what he says.
Many students_______from the new library since it was open to all.