Read and write.
In the future, maybe people (1) will go to the moon for vacations. They (2) ______ travel by rocket or spaceship. They (3) ______ travel by plane. They (4) ______ wear astronauts’ clothes. They (5) ______ eat space food through a tube. But they (6) ______ get out of the spaceship. It (7) ______ be too dangerous.