| A | B |
|---|
| ad | appears on TV, radio or in newspapers to sell a product |
| break the habit | stop doing a bad habit |
| volunteer | a person who works, not for money, but to help |
| chew | use your teeth to bite food before you swallow |
| plain | without additional flavor or decoration |
| treatment | medical care |
| situation | event or time |
| exist | be alive or present in the world |
| operation | surgery |
| fake | not real |
| recent | time in the past close to the present time |
| natural | without chemicals or processing |
| block | to stop something from moving |
| further | more; beyond this time |
| so far | up to this point in time |
| proven | given proof or explanation |
