题文
Every means __________ prevent the water from __________.
| A．are used to; polluting |
| B．get used to; polluting |
| C．is used to; polluted |
| D．is used to; being polluted |
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Every means __________ prevent the water from __________.
| A．are used to; polluting |
| B．get used to; polluting |
| C．is used to; polluted |
| D．is used to; being polluted |
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