It was in the lab _______was taken charge of by Professor Harris ________they did the experiment.
He managed to reach the summit of his career, but it was at the _________ of his health.
—She got her first science fiction published.It turned out to be _________. —when was that? —It Was in 2008__________ she was still in college.
US President Barack Obama is expecting the economy to show some _________ of recovery.
The_______is just around the corner and you won’t miss it.
What the expert has said and done will be _______ to the department managers.