---Is it Pro. King that will give the lecture on radiation?--- I can't __ I know it for sure.
—Shall we stop for lunch _____ shall we drive on?—Let’s stop for lunch, but the driver can’t drink _____ drive.
In his apartment there are two rooms, _____ is used as a living room.
_______ with any common sense can tell the difference between the two.
It is really _______ useful dictionary and _______ dictionary every one of us needs.
—It is ridiculous (荒唐的) that so many people believe the world will disappear in 2012.—__________ it is true?