With the help of the new equipment, our factory produced _____ VCD players in 2009 as the year before [ ]

Our teachers often advise us ________ carefully in class.

You can hardly imagine the efforts I have made _____the goal. [ ]

Everyone knows, perhaps except you, _______ your girl-friend is a cheat

Without Sir Tim, the father of the www, keeping up with the latest ____ so convenient. [ ]