______ better in 2010 World Expo is the duty of every citizen in Shanghai.
| A．Being served | B．Serving | C．Serve | D．Having served |
相关试题
The man insisted ______ 
a taxi for me even though I told him I lived nearby.
| A．find | B．to find | C．on finding | D．in finding |
I don’t think ____ is any need for a guide on our journey.
| A．it | B．this | C．there | D．that |
They received a number of _____ from customers about the lack of parking facilities.
| A．complains | B．complaints | C．complainer | D．complainers |
While he was at____ college, he took part in political activities, and was soon throw into ____ prison.
| A．the; / | B．/; the | C．/ ; / | D．the ; the |
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