Effective measures should ________ and laws should _______ to protect pandas. Otherwise, they are certain to die out.
| A．be taken; be passed |
| B．take; pass |
| C．be made; be taken |
| D．be set; be made |
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Effective measures should ________ and laws should _______ to protect pandas. Otherwise, they are certain to die out.
| A．be taken; be passed |
| B．take; pass |
| C．be made; be taken |
| D．be set; be made |
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