Seeing the road __________ with snow, we had to spend the holiday at home, watching TV.
| A．blocking |
| B．to block |
| C．blocked |
| D．to be blocked |
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Seeing the road __________ with snow, we had to spend the holiday at home, watching TV.
| A．blocking |
| B．to block |
| C．blocked |
| D．to be blocked |
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