As we’re students，we________obey the school rules．
| A．can |
| B．may |
| C．must |
| D．could |
You need________the trees，because the weather is too dry and the trees need________．
| A．to water；to water |
| B．to water；watering |
| C．watering；to water |
| D．watering；watering |
The shop assistant is unfriendly，so we won’t go to the shop________．
| A．any long |
| B．anymore |
| C．no longer |
| D．no more |
—________is the sweater？
—It’s fifty yuan．
| A．How much |
| B．How many |
| C．How old |
| D．How |
We can give old things away to people________．
| A．in the need |
| B．in a need |
| C．in needs |
| D．in need |
I learned how________the new computer．
| A．to use |
| B．using |
| C．use |
| D．to using |