Nearly all the streets are in ________lines, running from east to west. Those that run from north to south are called avenues.
| A．direct |
| B．right |
| C．straight |
| D．long |
According to research, children whose parents __________ are more likely to have difficulty __________ their studies.
| A．split up ； concentrating on |
| B．broke into ；to focus on |
| C．gave up ；concentration on |
| D．put into ； focusing on |
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 |