The girl seldom, if _____, turned to her brother for protection.
But the unpleasant feeling of coldness disappeared at the _______ of his students pouring out of their classroom to give him a warm, wordless welcome.
A terrible earthquake struck Wenchuan, Sichuan Province on May 12th,_____more than 60,000 deaths.
Take care! There is a nail______of the chair.
As far as we know, half of Canadian teenagers do not get enough sleep on school nights, _____?
Li was beaten in the contest, ______ had been expected.