We have planted many trees on the hill in the last five years.（改为被动语态）
Many trees have been planted by us on the hill in the last five years.
Many trees have been planted by us on the hill in the last five years.

【答案】Many trees have been planted by us on the hill in the last five years.

【解答】

【点评】

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发布：2025/1/1 11:30:2组卷：0引用：2难度：0.6

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We have planted many trees on the hill in the last five years.（改为被动语态） Many trees have been planted by us on the hill in the last five years.Many trees have been planted by us on the hill in the last five years.