As soon as ______ concert film This Is It was released on October 28th, it became ______ great success in all big cinemas across the planet.
_____ you have worked out the first problem, you may go on to work on the second.
Most of the evidence was destroyed in the fire. _____, it would be almost impossible to prove Jim guilty.
_____ life exists on any other planet in the solar system still remains a question.
It was almost midnight when a fire _____ in the neighborhood.
There is a peaceful and calm _____ in the country, quite different from that of a big city.