_____the size of the universe, some researchers believe that there is life beyond our planet.
For miles around me there was nothing but a desert, without a single plant or tree ______.
More and more people choose to shop in a supermarket as it offers a great ____ of goods.
So difficult ______ it to live in an English-speaking country that I determined to learn English.
For a moment nothing happened. Then ______all shouting together.
At the meeting, the people were _____by the kindness and natural beauty of his mother although there is a scar in her face.