An idea or a principle relating to something abstract is a ...: ответ на тест 5947 - Английский язык

An idea or a principle relating to something abstract is a …

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The realm of 1 ______________ of to-day influences almost, every aspect of human activity, while it was only in the beginning of our century that the basic idea, which was to develop into one of the most astonishing sciences of our time, was conceived. It was our Russian 2______________ A. S. Popov, who discovered the principle of wireless 3______________ that finally led to the development of electronic 4______________ for use in various communication devices.

We admired the stars ________ in the sky.

I wanted to say goodbye to Jerry, but he ...

The professor being ill, the lecture was ...

Originally, the White House was ...