—Paper ___________ wood. We should not waste paper.
—I agree. I always use __________ sides of paper.
| A．is made of; either | B．is made from; both |
| C．makes of; both | D．makes from; either |
—Paper ___________ wood. We should not waste paper.
—I agree. I always use __________ sides of paper.
| A．is made of; either | B．is made from; both |
| C．makes of; both | D．makes from; either |
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