| Question |
| swim | |
| swimming | |
| to swim |
| crowd | |
| crowded | |
| to crowd |
| school | |
| to school | |
| at school |
| pilot | |
| a pilot | |
| be pilot |
| because he prepare | |
| because he preparing | |
| because he has prepared |
| she | |
| her | |
| it |
| be all | |
| all | |
| to be all |
| to skiing | |
| be skiing | |
| skiing |
| up | |
| be up | |
| in up |
| front of | |
| in front of | |
| in front |