| 1 | as well |
| 2 | ask for |
| 3 | ask for a refund |
| 4 | ask somebody for a ride |
| 5 | at all |
| 6 | at hand |
| 7 | at home |
| 8 | at home with |
| 9 | at least |
| 10 | at once |
| 11 | at one time |
| 1 | at the bus station |
| 2 | at the end of |
| 3 | at the most/at most |
| 4 | at your service |
| 5 | at this point |
| 6 | audition for |
| 7 | auto show |
| 8 | back out |
| 9 | back to normal |
| 10 | back up |
| 11 | baggage claim area |
| 12 | baggage counter |
