Which clause in the passage is written in the passive voice? adapted from Is There Life On Mars?
by Dr. Marc Fries
This is an idea that many people have pondered and speculated about for hundreds of years, and it is one that I have wondered about for most of my own life.
Earth is the only place that we know of where there is life. Many people have studied Mars, and some have even said that they thought they saw signs of life. We now know they were fooled by what they were able to see because they did not have telescopes that were powerful enough. To really confirm the existence of life on Mars, we need a close-up look at the planet!
Robotic spacecraft have given us great views of the planet, providing us with more information about the planet than we ever thought possible. Still, no humans have ever tried to go to Mars, and no human missions to Mars will be tried for years. In fact, the first people on Mars may be your age today. When you are grown, maybe you will watch—or even be one of—the people who make the first trip to Mars