--These days I can only sleep for four or five hours at night as I’m too busy with my research work. --If you keep going on like that, you are sure to ______ sooner or later.
Some people said _____ that Copenhagen Conference 2009 didn’t reach any official agreement.
Only when you ______ what you have learned to practice ______ say you have made it.
Our team’s success was ________ the efforts of Mr. Mark, who is ________ arrive here in ten minutes.
________ several times, Bill made up his mind not to watch late night movies any more.
One must have a wide range of knowledge to ________ the changing market.