1We still don't know ............... Mars supports life or not.
Wrong!
Use "whether" to introduce an indirect yes/no question before "or not".
2Scientists ............... that Mars might have supported life in the past.
Wrong!
Use "suspect" for a general present scientific belief.
3Mars is ............... arid and dusty.
Wrong!
The adverb "presently" means that this is the current state of Mars.
4Characteristics like channels on the Martian surface indicate that the planet ............... once very wet.
Wrong!
Use "was" to describe the planet's condition in the past.
5Scientists are ............... to learn about the history of water on Mars.
Wrong!
The adjective "eager" follows "are" to describe the scientists.
6Water is fundamental to the question of whether the planet has ever ............... microbial or some other life.
Wrong!
The past participle "supported" is needed after "has ever".
7Life ............... we know it requires water.
Wrong!
Use "as" before the clause "we know it".
8A fisherman once ............... on the banks of a river.
Wrong!
Use "lived" as the simple past verb in this story opening.
9He ............... fishing every morning, but could never catch enough fish.
Select 2 answers.
Wrong!
Both "would go" and "went" can describe a repeated habit in the past.
10He ............... a miserable life.
Wrong!
Use "led" as the simple past form in this story.
11Then one day he ............... a big fish.
Wrong!
Use "caught" for this completed past event in the story.
12The fisherman ............... the fish to the market, but no one could pay the price he demanded.
Wrong!
Use "took" for the next completed past event in the story.
Exercise complete
0 out of 12
correct answers
Answers
- We still don’t know whether Mars supports life or not.
- Scientists suspect that Mars might have supported life in the past.
- Mars is presently arid and dusty.
- Characteristics like channels on the Martian surface indicate that the planet was once very wet.
- Scientists are eager to learn about the history of water on Mars.
- Water is fundamental to the question of whether the planet has ever supported microbial or some other life.
- Life as we know it requires water.
- A fisherman once lived on the banks of a river.
- He would go / went fishing every morning, but could never catch enough fish.
- He led a miserable life.
- Then one day he caught a big fish.
- The fisherman took the fish to the market, but no one could pay the price he demanded.