They no longer have to ______ large numbers of temporary workers to do the harvesting.
A．take on B．hire on C．work on D．carry on
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．sight B．scene C．view D．sign
A terrible earthquake struck Wenchuan, Sichuan Province on May 12th,_____more than 60,000 deaths.
A．caused B．having caused
C．to have caused D．causing
Take care! There is a nail______of the chair.
A．sticking out B．putting out
C．standing out D．giving out
As far as we know, half of Canadian teenagers do not get enough sleep on school nights, _____?
A．do they B．don’t they
C．don’t you D．isn’t it
—Is John coming by bus?
—He should，but he _______ not．He likes driving his car
A．must B．can C．need D．may
