What _______ public is concerned about is whether medical workers and scientists will be able to find _______ cure for this new disease after the vaccine is tried on _______ volunteers.
—Mrs. Smith! Tom has broken the mirror! —________ Such things happen.
Mr. Rod prefers a restaurant in a small town to _______ in so large a city as Beijing.
Have you heard news that he is ranked ________first in the competition?
So small ________ that they don’t admit much light at all.
—I have booked a room ________two. —I’ll check, sir.