Поставить в нужную форму incredible as may seem, it (contain) strange being who are believed to be part of an army from the planet Mars. Soft music (follow). A subtle touch to get people anxious. What ( go on)? The announcer (come) on again. There was a nervy, panicky tone to his voice. He said the sistuation (change) rapidly.

Incredible as may seem, it (contained) strange beings who are believed to be part of an army from the planet Mars. Soft music (followed). A subtle touch to get people anxious. What (was going on)? The announcer (came) on again. There was a nervy, panicky tone to his voice. He said the sistuation (was changing) rapidly.