In the past few years, __________much improvement in the traffic.
| A．there has been | B．there has had | C．there have been | D．there had been |
---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 asof 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 |
The get-together after tem years of separation should be a（n）of excitement, but the old friends could not feel real joy.
| A．situation | B．occasion | C．atmosphere | D．condition |