33. With more and more forests being destroyed, huge quantities of good soil in our country ______.
| A．had been washed away | B．has been washed away |
| C．were washed away | D．are being washed away |
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33. With more and more forests being destroyed, huge quantities of good soil in our country ______.
| A．had been washed away | B．has been washed away |
| C．were washed away | D．are being washed away |
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