Put in the or a/an where necessary. 1. Sun is star.
2. Moon goes round earth every twenty-seven days.
3. What is longest river in world?
4. I saw cloud in sky.
5. What's capital of Spain?
6. "Would you like to travel in space?" - "Yes, I'd love to go to Moon".
7. I lay down on grass and looked up at sky.
8. Brazil is country in South America.