The text is too difficult. The explanation of our teacher will help make it easy ________.
| A．to understand | B．to be understood |
| C．understood | D．understanding |
_____ with so much trouble, we failed to complete the task on time
| A．To face | B．Faced | C．Face | D．facing |
It’s reported that the United States uses______ energy as the whole of Europe.
| A．as twice | B．twice much |
| C．twice much as | D．twice as much |
The rare fish,_____ from the cooking pot, has been returned to the sea.
| A．saved | B．saving | C．to be saved | D．having saved |
----- I’m taking my driving test tomorrow.
----- _____!
| A．Cheers | B．Good luck | C．Come on | D．Congratulations |
Some insects_____ the colour of their surroundings (环境) to protect themselves.
| A．take up | B．take off | C．take on | D．take out |