| bubble |
a ball of air or other gas inside another substance. |
| calendar |
a page or set of pages that shows the days, weeks, and months of a year. |
| contest |
a sport or game that people try to win to get a prize; competition. |
| envelope |
a folded paper covering for a letter or other papers you mail. You write the address and put a stamp on an envelope before you mail it. |
| fierce |
wild and dangerous. |
| fire |
the heat, light, and flames made when something burns. |
| gas |
a form of matter that is neither liquid nor solid. Oxygen is an example of a gas. |
| household |
the group of people, such as a family, that lives together in one place. |
| quit |
to stop doing something. |
| railroad |
a road of two connected steel bars along which trains move, or a system of transportation that uses these roads. |
| resource |
a source of help or support. |
| school |
a place for teaching and learning. |
| snug |
small and comfortable; cozy. |
| soil1 |
the top layer of the earth's surface; dirt. |
| troop |
(plural) soldiers. |