| How old are the pyramids? |
| How old are you? |
| How old is she? |
| How old is Jane? |
| How old are Mary and Tim? |
| How old are they? |
| How old is the baby? |
| How old is your mother? |
| How old are your parents? |
| How old is the earth? |
| How old do I look? |
| How old do the kids begin school? |
| How old do they look? |
| How old do you want to be? |
| How old do you feel? |
| How old does she feel? |
| How old does Michael want to be? |