阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空。

Do you know something about the Moon? You can  (seeing) it at night. Sometimes it looks round and  (brightly). It also looks quite near. But the Moon is very far from the Earth. If you take  spaceship, you will get there in more than  (third) days. The spaceship  (go) very fast, at 11 kilometres a second. In 1969 two  (American) got on the Moon by spaceship.

There (be) no living things on the Moon there is no air or water there. That's why people can't live there. But you may know you can jump much higher there than the Earth. It's fun, isn't it?

 (Hopeful) I can visit the Moon in the future.