Choose the correct answer.

Neil Armstrong, ___________ was the first man to walk on the moon, made history in 1969.

Choose the correct answer.

My cousin, ___________ lives in Australia, is coming to visit us next month.

Choose the correct answer.

Mercury is the ____________ planet in our Solar System.

Choose the correct answer.

____________ is essential for life and is the most common liquid on Earth.

Choose the correct answer.

Venus is often called Earth's sister planet because of their similar ____________.

Choose the correct answer.

Astronauts travel to ____________ to conduct scientific experiments and explore the universe.

Choose the correct answer.

The ____________ includes the Sun and the planets orbiting around it.

Choose the correct answer.

____________ is the only planet known to support life in our Solar System.