When people cut down big trees, new trees should be planted. ,they will have no trees to cut down in the future.
A.If not | B.If so | C.If no so | D.If don’t |
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When people cut down big trees, new trees should be planted. ,they will have no trees to cut down in the future.
A.If not | B.If so | C.If no so | D.If don’t |