Fill in the blanks with an appropriate word or phrase.
Answers
1. We still don’t know whether Mars supports life or not.
2. Scientists suspect that Mars might have supported life in the past.
3. Mars is presently arid and dusty.
4. Characteristics like channels on the Martian surface indicates that the planet was once very wet.
5. Scientists are eager to learn about the history of water on Mars.
6. Water is fundamental to the question of whether the planet has ever supported microbial or some other life.
7. Life as we know it requires water.
8. A fisherman once lived on the banks of a river.
9. He went / would go fishing every morning, but could never catch enough fish.
10. He led / leads a miserable life.
11. Then one day he caught a big fish.
12. The fisherman took the fish to the market, but no one could pay the price he demanded.
