Listen and choose the correct answer.

Read the passage and choose the correct answer to fill in each of the following blanks.

Are we alone in the universe? This is a very big question, and until now scientists have not found any (7) ________ of aliens. However, there are many places where life could (8) ________. For example, in our own solar system, three moons might have life: Europa, Callisto, and Ganymede. These moons are around the planet Jupiter. They are very cold, (9) ________ under their icy surfaces, there may be oceans with living things. In 2015, scientists (10) ________ a new planet called Kepler-452b. It is about 1,400 light-years from Earth. A light-year is the distance that light travels in one year. It is about 9.5 trillion kilometers. Kepler-452b is similar to Earth and is in its star's (11) ________ zone. This means that there is the (12) ________ of water on the planet. Water is very important for life as we know it. The most famous place where we may find life is Mars.

Read the passage and choose the correct answer for each question.

Mercury is very close to the Sun and doesn't have much air. It looks a bit like our Moon because it has many holes called craters and is covered in dust. The air that it does have is made mostly of three gases: helium, hydrogen, and oxygen.
Venus is another planet that has rocks inside and outside. When we look at pictures of Venus, we can see big mountains, flat lands, and maybe even volcanoes that are still working. Venus is very hot and dry without any water. The air is mostly carbon dioxide and nitrogen.
Mars is known as the Red Planet because it has lots of red dust. Its air is very thin and is mostly carbon dioxide. Mars has big mountains, wide valleys, holes called craters, and hills of sand.
Jupiter is the biggest planet in the solar system and has a famous spot called the Great Red Spot. People think this spot is a big storm that keeps spinning. Jupiter is made mostly of two gases: hydrogen and helium.
Saturn is famous for its beautiful rings, which people think are made of ice. The air on Saturn has hydrogen, helium, and methane gases.
Uranus is special because it spins lying on its side. Its air has hydrogen, helium, and methane gases.
Neptune looks blue and has air made of methane, hydrogen, and helium gases. It has a big storm called the Great Dark Spot, which is as big as Earth.
Pluto used to be called a planet, but not anymore. It's very cold and made mostly of frozen gases. It has a very thin air made of methane.

Use the word given and other words (2 - 5 words in total), complete the second sentence so that it has a similar meaning to the first sentence. Do not change the word given.