题目内容：

They climb trees better than leopards. They are climbing trees错了.应该用一般现在时.
怎么改

优质解答

They climb trees better than leopards.——他们爬树比美洲豹还要好.
They are climbing trees——他们正在爬树 是现在进行时 如果改成是一般现在时就应该是They climb trees.