I. Listen and fill in each blank with no more than three words or numbers.

1. The speaker mentions ________ questions at the beginning of the listening.

2. The Earth looks so beautiful from space with _____________.

3. __________ is just a red, hot ball, pretty much the same as Mars.

4. The speaker used to learn that __________ was a planet.

5. There are now only __________ planets in our solar system.