题文
The news came as no surprise to me.I _____ for some time that the factory was going to shut down.
| A．knew | B．had known |
| C．have known | D．know |
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The news came as no surprise to me.I _____ for some time that the factory was going to shut down.
| A．knew | B．had known |
| C．have known | D．know |
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