The science of computer, _____rapid progress has been made in recent years, is the most important of all science.
It was after he got what he had wanted ________he realized it was not so important .
With the development of science and technology,there is no doubt ________ Chinese astronauts will land on the moon in the near future.
To write a good article you must first ________your ideas very carefully.
John promised his doctor he ________not smoke,and he has never smoked ever since.
—Have you heard of the North Korea’s nuclear test? —Yes,________news came as ________shock to me.