If we expect ________ much cleaner world, we should attract ________world’s attention to protect the world.
| A．a; a | B．a; / | C．a; the | D．the; / |
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If we expect ________ much cleaner world, we should attract ________world’s attention to protect the world.
| A．a; a | B．a; / | C．a; the | D．the; / |
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