_______ we are doing has never been done before.
| A．That | B．What |
| C．Which | D．Whether |
“One blue represents the economy growing. The other blue is the blue sky. That means we have to ______ development and environmental protection,” Wang Zhongbing said.
| A．balance | B．benefit |
| C．admire | D．wipe |
Daily practice is a good ______ in learning English. If you keep trying, you will be sure to make greater progress.
| A．award | B．belief |
| C．trick | D．system |
Most of us believe that there should be a(n) ______ of mutual(相互的) trust and respect between teachers and students in teaching.
| A．direction | B．chain |
| C．passage | D．atmosphere |
The robbers searched all the boxes in the house, hoping to __________more valuables
| A．cheer up | B．set up |
| C．break up | D．turn up |
If something comes flying toward your face, your __________ will be to pull back.
| A．reaction | B．strength |
| C．prediction | D．patience |