The boy made the same mistakes , which, of course, made his parents very angry.
I think David, _______ you, ______ to blame.
To develop the New Economy, we must not only update our economy with advanced science and technology, but also, ________ this new trend of development.
The people began to break the windows, but the police soon had the situation ________.
As is often pointed out, knowledge is a two-edged weapon which can be used ________ for good or evil.
There are signs that there is a growing tendency for people to turn away from ________ western medicine to alternative methods of treatment.