完成句子
问题描述：
完成句子
the trees are growing well.the teachers plangted them two years ago.
the trees [ ].the teachers plangted them two years ago[ ][ ]well.
答
the trees [ that ]the teachers planted them two years ago[ are ][ growing ]well.我不明白，能做个解释吗？谢了!that引导定语the teachers planted them two years ago来修饰主语the trees 谓语are growing与原句一致