Every year, more than 70,000,000 sharks _______ for their fins(鱼翅).
| A．were killed | B．have killed |
| C．are killed | D．will kill |
Every year, more than 70,000,000 sharks _______ for their fins(鱼翅).
| A．were killed | B．have killed |
| C．are killed | D．will kill |
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