American students take part in a wide variety of after-school activities _______ they develop their social skills.
| A．where | B．which | C．that | D．what |
---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 |
Economy should be developed to raise people’s living standard. , effective measures should be taken to deal with different types of pollution caused by the economic development.
| A．Moreover | B．Therefore | C．Meanwhile | D．Otherwise |
Only latelyabout the dark secrets behind the seemingly-happy marriage of the golf star Tiger Woods.
| A．the public have known | B．were the public known |
| C．have the public known | D．the public knew |