it is important for us to protect the earth.改为同义句
it is important for us to protect the earth.改为同义句
it is important for us to protect the earth.改为同义句（非诚勿答）
—— —— —— ——important for us.
sorry啊～没打关键的……
it is important for us to protect the earth.改为同义句（非诚勿答）
—— —— —— ——important for us.
sorry啊～没打关键的……
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