问题描述：
同义句转换：1.Trees live longest on Earth. 2.Plants absorb water from the earth.
1.Trees live longest on Earth.
2.Plants absorb water from the earth.
3.I will return your book as soon as I can.
1.Trees live longest on Earth.
2.Plants absorb water from the earth.
3.I will return your book as soon as I can.
问题解答：
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