A key witness can often provide detailed corroboration, thus having a dramatic ___ on the outcome of a complex legal case.It’s generally agreed that the ____ of television in the modern world is considerable.Martha Graham playe...

A key witness can often provide detailed corroboration, thus having a dramatic ___ on the outcome of a complex legal case.It’s generally agreed that the ____ of television in the modern world is considerable.Martha Graham played a major role in developing the theory of modern dance, so extending her ____ to a whole new generation of dancers.