| 1 | My grandfather is already 80 years old, but he is very healthy. | |
| 2 | The scholarship includes an allowance of 80 dollars for books. | |
| 3 | We are going to wish grandma a happy 80th birthday at the end of this month. | |
| 4 | The car brakes failed, and the speed dropped from 80 miles per hour to zero. |
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