| 1 | The house has been added to (ie New rooms, etc have been built on to it) from time to time. | |
| 2 | More than60 pits in old mining areas are being extended. | |
| 3 | The runway of this airport is undergoing expansion to accommodate large planes. | |
| 4 | After centuries' of expansions and renovations, the palace was finally transformed into a museum of the imperial era. | |
| 5 | Thanks to the generosity of donors, we' ve rebuilt the hospital bit by bit, and we' re expanding our maternal and child health services and our education programs. |