The science of computer, _____rapid progress has been made in recent years, is the most important of all science.
Every year _____ money and energy is spent on environment protection.
She made it quite clear that she was no longer going to______my selfishness and moodiness.
As the busiest woman in Norton,she made ________ her duty to look after all the other people’s affairs in that town.
Our efforts resulted________failure.I think I’m also responsible________it.
When was it________you let out the secret?