-- _____is that used for?---_____ the floor.
Why! I have nothing to confess. ______ you want me to say?
The best method to ______ this goal is to unite as many people as possible.
Scientists say it may be five or six years _____ it is possible to test this medicine on human patients.
— What do you want to do next? We have half an hour until the basketball game.— ______. Whatever you want to do is fine with me.
—Excuse me, Tom. How many miles is five kilometers?—Sorry. _______