| addition |
the process of finding the total of two or more numbers. |
| curtain |
a piece of cloth that hangs in a window or other opening to shut out light or to cover something. |
| enemy |
a person who hates or wants to harm another. |
| extra |
more than is expected or usual. |
| flag |
a piece of cloth with special colors and designs used as a symbol of a country or organization. |
| group |
a collection of people, things, or ideas that are in one place or have important things in common. |
| mainly |
for the most part; mostly. |
| net1 |
an object made of strong threads or strings that are woven in a way that leaves open spaces between them. |
| oil |
a slippery liquid that comes from minerals, animals, plants, or chemicals. |
| once |
at one time in the past. |
| pupil1 |
a young person who is taught by a teacher. |
| service |
the work of a person who does things for other people. |
| spy |
a person who watches in secret to get information about others. |
| squad |
a small number of persons trained to work together. |
| storm |
a violent event in weather. In a storm, there may be a lot of rain, snow, or wind. |