We spent many years studying the formation of rocks, experiencing many sufferings and even dealth .But our hard work _____in the end, and we made it.
| A．paid off | B．paid back | C．given away | D．came out |
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 |
—Who knows where Terry is?
—The reason __________ Terry is absent is __________ his father had an accident.
| A．why ； because |
| B．why ； that |
| C．that ； because |
| D．that ；/ |