题文
Ten years has passed________the CCTV event People Who Moved China took ptace in 2002．
| A．when |
| B．while |
| C．before |
| D．since |
Ten years has passed________the CCTV event People Who Moved China took ptace in 2002．
| A．when |
| B．while |
| C．before |
| D．since |
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