What the public is about is whether medical workers and scientists will be able to find a cure for the new disease in a short time.
It was impolite of him ____without ____good-bye
Development of science and technology must benefit people ______ harm them.
When you finish reading the book, you will have ______better understanding of______ life.
____ the consequences of the chemical leaks, the specialists haven’t given final conclusion before they obtain accurate statistics.
It was not until I came here ____ I realized this place was famous for not only its beauty but also its weather.