—Was it in 1969___________the American astronaut succeeded___________landing on the moon ? —Yes , that’s right .
At the computer operation test, one is supposed to stay at his own machine, keep his eyes on his screen, ______ to anyone.
______ as the “First Lady of Speech”, Dr Lillian Glass is recognized as one of the world’s leading experts on communication skills.
—What happened to you on your way back to the hotel last night ?—I lost my way in complete darkness and ,__________ things worse , it began to pour .
Comparison may make something appear more beautiful than it is when _________ alone.
—Where is our English teacher?—She is in the classroom, _____ the exercises _________ the students have done at home.