.
. Once fighting _________ between the two villages and many people were killed.
| A．broke out | B．was broken out | C．had broken out | D．had been broken out |
---Did you call the airline to __________your flight booking?
---Yes, I did.
| A．confirm | B．break | C．guarantee | D．submit |
No important progress was made in UN Climate Conference in Copenhagen as__________of the rich countries agreed to offer large amounts of money to fight global warming.
| A．nothing | B．none | C．neither | D．both |
---Will you come over to Beijing for the may Day holiday?
---I’d like to, but my family__________the 2010 World Expo in Shanghai during the holiday.
| A．are visiting | B．are to visit | C．will be visiting | D．will visit |
The problem of the present world is that those who are imaginative have little experience
__________those who are experienced have weak imagination.
| A．unless | B．although | C．because | D．while |
Schools across China are expected to hire 50,000 college graduates this year as short-term teachers __________increase job opportunities.
| A．help | B．to have helped | C．to help | D．having helped |