Gary Locke, a Chinese American, once ____as the governor of Washington for 8 years and now is U.S. Commerce Secretary.
| A．had worked | B．worked | C．is working | D．has been working |
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Gary Locke, a Chinese American, once ____as the governor of Washington for 8 years and now is U.S. Commerce Secretary.
| A．had worked | B．worked | C．is working | D．has been working |
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