Animals are our close friends．We are supposed________them．
A．to protect
B．protecting
C．protect
We________six days a week，but we only work five days now．
| A．used to work |
| B．used work |
| C．used to working |
| D．use to work |
Now I________the weather here．
| A．used to |
| B．am use to |
| C．am used to |
| D．am used on |
He finds________really difficult for him to learn English well in just one year．
| A．that |
| B．this |
| C．it |
| D．its |
I was surprised that she could run________I could．
| A．as faster as |
| B．so fast than |
| C．as fast as |
| D．the fastest |