we___trees last Sunday.So far we______(plant) over 3000 trees there.
问题描述：
we___trees last Sunday.So far we______(plant) over 3000 trees there.
答
We (planted) trees last Sunday.
So far we (have planted) over 3000 trees there.为什么用have planted？因为"So far"是现在完成时的标志，必须用“have(单数第三人称用has)+过去分词”的形式。