| bubble |
a ball of air or other gas inside another substance. |
| hospital |
a place where sick or hurt people go to find care or help. |
| learn |
to get knowledge about something through study or experience. |
| motorcycle |
a vehicle with two wheels, a heavy frame, and an engine. |
| oil |
a slippery liquid that comes from minerals, animals, plants, or chemicals. |
| opinion |
what you think about something or somebody. |
| pay |
to give money to (a person or business) in exchange for things or services. |
| rescue |
to make someone safe again; bring out of a dangerous situation. |
| sell |
to give something to someone in exchange for money. |
| shut |
to close by moving something that covers an opening. |
| test |
an examination or experiment to find out what something is, what it is made up of, or how good it is. |
| travel |
to go from place to place. |
| type |
a group of things that are the same in some way. |
| underwater |
below the water's surface. |
| wash |
to make something clean by using water or soap. |