In many countries, colors _______ express feelings and enliven language.
| A．are used to | B．used to |
| C．use to | D．have used to |
The accident was really unexpected I did try to avoid _______ the car in front of mine, but I failed
| A．to hit | B．to have hit |
| C．having hit | D．hitting |
We Chinese are proud _______our great success _______the area of science and technology.
| A．of; in | B．for ;on |
| C．of; on | D．form |
Mrs. Green takes the _______that children should be allowed to learn at their own speed.
| A．behaviour | B．description |
| C．attitude | D．method |
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 |
--When are you leaving for Shanghai?
---Tomorrow morning. My plane _______at 10:00 a.m.
| A．is left | B．was leaving |
| C．leaves | D．has left |