—I wonder what makes you a successful manager.—I ________ as a waiter for five years,which contributes a lot to my today’s work.
They no longer have to ______ large numbers of temporary workers to do the harvesting.
_________ many times, but he still couldn’t understand it.
It is to read the books our teacher recommended , for they are well _____ reading.
He was so __________ a key university that he would work until late into the night.
-Look! Everything here is under construction. -Oh, has the building once _________ for exhibition been pulled down, too?