The light will be thrown ______ the cause of cancer by research that is now in progress.
| A．to | B．upon | C．in | D．for |
Look over there—there's a very long, winding path __________ up to the house.
| A．leading |
| B．leads |
| C．led |
| D．to lead |
The next thing he saw was smoke__________ from behind the house.
【选项 】
| A．rose |
| B．rising |
| C．to rise |
| D．risen |
The girl was so __________ of the snake that she began to cry the moment she saw it.
| A．proud |
| B．scared |
| C．tired |
| D．guilty |
The driver couldn't react quickly enough when the road bent __________
| A．seriously |
| B．directly |
| C．positively |
| D．sharply |
Had early explores come from the southern hemi-sphere, would our maps appear __________ ？
| A．inside out |
| B．all over |
| C．upside down |
| D．down through |