| alert |
to warn or make aware. |
| cheap |
having a low price. |
| danger |
a chance or likelihood that something bad or harmful may happen; peril; risk. |
| extra |
more than is expected or usual. |
| gap |
a space or opening between two things. |
| grass |
a short green plant with narrow pointed leaves that usually covers fields and yards. |
| hero |
a person who has courage and who is a model for others. |
| lung |
either of the two organs in the body that control breathing. |
| mill |
a machine that crushes whole or solid substances. |
| owe |
to have to pay; be in debt to someone. |
| real |
actual or true. |
| runway |
a smooth, level strip on which airplanes take off and land. |
| service |
the work of a person who does things for other people. |
| trail |
a path or course through a forest or other rural place. |
| treatment |
the way a person acts toward another person or thing. |