The 6th Car Exhibition ______ at Nanjing International Expo Center on April 28, 2013.
| A．holds | B．held |
| C．was held | D．will be held |
The 6th Car Exhibition ______ at Nanjing International Expo Center on April 28, 2013.
| A．holds | B．held |
| C．was held | D．will be held |
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