With our country entering an aging society, ______ the retirement age is probably unavoidable.
| A．having delayed | B．delaying | C．being delayed | D．to be delayed |
As soon as the gate was opened, the people around me rushed into the supermarket and I got __________ from my mother.
| A．separated |
| B．divided |
| C．missed |
| D．lost |
The government __________ air quality in urban areas from level one to five ： excellent，fairly good, slightly polluted, poor and dangerous.
| A．arranges |
| B．classifies |
| C．distributes |
| D．divides |
I got __________ from my classmates when climbing the hill.
| A．divided |
| B．dividing |
| C．separated |
| D．separating |
The teacher __________ his students __________ five groups.
| A．divided ； into |
| B．separated ； from |
| C．separated ； into |
| D．divided ； from |
The police are trying to find out the __________ of the woman killed in the traffic accident.
| A．evidence |
| B．recognition |
| C．identity |
| D．status |