1. Which planet is closer to the Sun?
2. Mars has as many moons a Pluto.
3. English is more difficult than maths.
4. Out planet is the most beautiful.
5. Mercury isn't as big as Venus.
6. Our planet is the best.

#2
attach - to connect...
course - one part of a meal
crew - a group of people...
commander - a person who...
cabin - a small room
float - to move on the surface...
sleeping bag - a large warm bag...
flight engineer - a member of...